如果我理解正确，您必须对代码进行一些重构并调用wp_localize_script 战略上。

根据你的代码，我认为你有两个选择。

你可以打电话wp_localize_script 一次，添加任意多个值$l10n 阵列并仅创建一个$object_name 在JS中使用wp_localize_script 你需要多少次，但你的$object_name 每次调用时都需要保持唯一性

function register_scount_script() {
    // As a best practice use `get_stylesheet_directory_uri` instead of `get_template_directory_uri`, unless you really know what you are doing.
    wp_register_script( \'scount\', get_stylesheet_directory_uri() . \'/assets/js/us-states.js\', array( \'jquery\' ), \'1.0.0\', true );
}

/**
 * First method. You will call `wp_localize_script` once, add as many values as you want within $l10n array
 * and create only one $object_name to be used within JS.
 */
function localize_scount_script_first_method() {
    $args = array(
        \'post_type\'  => \'property\',
        \'fields\'     => \'ids\',
        \'meta_query\' => array(
            \'relation\' => \'AND\',
            array(
                \'key\'   => \'state\',
                \'value\' => \'NC\'
            ),
            array(
                \'key\'     => \'available\',
                \'compare\' => \'=\',
                \'value\'   => \'1\'
            )
        )
    );

    $results      = new WP_Query( $args );
    $nc_completed = count( $results->posts );

    // At this point, you can execute the query again and just change \'state\' key value to \'SC\', for instance.
    // Then you would have/create a new variable $sc_completed.

    /**
     * @param string $handle Script handle the data will be attached to.
     * @param string $object_name Name for the JavaScript object. Passed directly, so it should be qualified JS variable.
     * @param array $l10n The data itself. The data can be either a single or multi-dimensional array.
     */
    wp_localize_script(
        \'scount\',
        \'completed\',
        array(
            \'nc_completed\' => $nc_completed, // This value would be accessible in JS using var completed.nc_completed
//          \'sc_completed\' => $sc_completed // This value would be accessible in JS using var completed.sc_completed
        )
    );

    // Make sure you reset $wp_query global. If not you might have trouble somewhere else in your code.
    wp_reset_query();
}

/**
 * Second method. You will call `wp_localize_script` as many times as you need, but your $object_name needs to be unique
 * for each time you call it.
 */
function localize_scount_script_sec_method() {
    $args = array(
        \'post_type\'  => \'property\',
        \'fields\'     => \'ids\',
        \'meta_query\' => array(
            \'relation\' => \'AND\',
            array(
                \'key\'   => \'state\',
                \'value\' => \'NC\'
            ),
            array(
                \'key\'     => \'available\',
                \'compare\' => \'=\',
                \'value\'   => \'1\'
            )
        )
    );

    $results   = new WP_Query( $args );
    $completed = count( $results->posts );

    /**
     * @param string $handle Script handle the data will be attached to.
     * @param string $object_name Name for the JavaScript object. Passed directly, so it should be qualified JS variable.
     * @param array $l10n The data itself. The data can be either a single or multi-dimensional array.
     */
    wp_localize_script(
        \'scount\',
        \'nc_completed\', // Needs to be unique!
        array(
            \'completed\' => $completed, // This value would be accessible in JS using var nc_completed.completed
        )
    );

    // At this point you could perform a new query and localize again:
    $args = array(
        \'post_type\'  => \'property\',
        \'fields\'     => \'ids\',
        \'meta_query\' => array(
            \'relation\' => \'AND\',
            array(
                \'key\'   => \'state\',
                \'value\' => \'SC\' // Changed to SC.
            ),
            array(
                \'key\'     => \'available\',
                \'compare\' => \'=\',
                \'value\'   => \'1\'
            )
        )
    );

    $results   = new WP_Query( $args );
    $completed = count( $results->posts );

    /**
     * @param string $handle Script handle the data will be attached to.
     * @param string $object_name Name for the JavaScript object. Passed directly, so it should be qualified JS variable.
     * @param array $l10n The data itself. The data can be either a single or multi-dimensional array.
     */
    wp_localize_script(
        \'scount\',
        \'sc_completed\', // Needs to be unique!
        array(
            \'completed\' => $completed, // This value would be accessible in JS using var sc_completed.completed
        )
    );

    // Make sure you reset $wp_query global. If not you might have trouble somewhere else in your code.
    wp_reset_query();
}

function enqueue_scount_script() {
    wp_enqueue_script( \'scount\' );
}

add_action( \'wp_enqueue_scripts\', \'register_scount_script\' );
add_action( \'wp_enqueue_scripts\', \'localize_scount_script_first_method\', 11 );
//add_action( \'wp_enqueue_scripts\', \'localize_scount_script_sec_method\', 11 );
add_action( \'wp_enqueue_scripts\', \'enqueue_scount_script\', 12 );