BigCommerce Search

You can use the built-in WordPress search feature, and by adding this code to your functions.php file, you can make it so that only bigcommerce products show in the search:

function searchfilter($query) {
 
    if ($query->is_search && !is_admin() ) {
        $query->set('post_type',array('bigcommerce_product'));
    }
 
return $query;
}
 
add_filter('pre_get_posts','searchfilter');

This code was copied from here: https://www.wpbeginner.com/wp-tutorials/how-to-limit-search-results-for-specific-post-types-in-wordpress/ and I’ve updated the post_type array so that it targets the products only.