wp_query ‘s’ parameter does not work with custom post type

You can do like this,

$args = array(
      'post_type' => 'tribe_events', 
      'post_per_page' =>  get_option('posts_per_page'), 
       's' => get_search_query()
   );

$query = new WP_Query($args); // Use new keyword and you need to use WP_Query not Wp_Query

while($query->have_posts()): $query->the_post();

     the_title();

endwhile;wp_reset_postdata(); 

I used this in search.php file. Worked without any problem.