Wpdb result with pagination

Your inner query looks like it just gets a single item from wp_listings, so I assume you mean pagination on the outer WP_Query ?

This is described here:

https://developer.wordpress.org/reference/classes/wp_query/#pagination-parameters

So to get the 4th page, with 20 posts per page you need this:

$args['posts_per_page'] = 20;
$args['paged'] = 4;
$listQ = new WP_Query( $args );

There’s more info on pagination including how you can render pagination links here:

https://developer.wordpress.org/themes/functionality/pagination/