Remove Rating Display if No Rating Exists Yet in Listify Theme.

functions.php

<?php

/**
 * Remove Rating Display if No Rating Exists Yet
 *
 * @link https://secure.helpscout.net/conversation/425117562/121662/
 */
add_action( 'init', function() {

	// Remove Rating in Card if Empty.
	add_filter( 'listify_get_listing_to_array', function( $data ) {
		if ( ! $data['reviews']['count'] ) {
			$data['cardDisplay']['rating'] = false;
		}
		return $data;
	} );

	// Remove In Single Listing Hero (Only for WPJM Reviews).
	add_action( 'template_redirect', function() {
		if ( is_singular( 'job_listing' ) && function_exists( 'wpjmr_get_reviews_count' ) ) {
			$count = wpjmr_get_reviews_count( get_queried_object_id() );
			if ( ! $count ) {
				remove_action( 'single_job_listing_meta_after', 'listify_the_listing_rating' );
			}
		}
	} );

} );