Query Toolset Repeatable Field

    $rfg_ids = toolset_get_related_posts( $post_id, 'repeatable-group-slug', 'parent', 100, 0, array(), 'post_id', 'child');
    
    if ( $rfg_ids ){
        foreach ( $rfg_ids as $rfg_id) {
            $url = get_post_meta( $rfg_id, 'wpcf-repeatable-field-slug', true);
            ...
        }
    }

$post_id The post id of the query post

100 LIMIT, maximum number of returned results (“posts per page”). Default value is 100.

0 OFFSET, result offset (number of post to displace or pass over). Default value is 0.

array() Additional query arguments to narrow down the search.

post_id Determines return type. ‘post_id’ for array of post IDs, ‘post_object’ for an array of WP_Post objects. By default, post IDs are returned.

child role_to_return: Which posts from the relationship should be returned.

Detailed explanation: https://toolset.com/documentation/customizing-sites-using-php/post-relationships-api/#toolset_get_related_posts