Your syntax is off – I can see you’re trying to add meta_value
as an orderby
param, but you’ve actually added as it an array entry – this is why formatting and indentation is important!
$rate_query = new WP_Query([
'post_type' => 'movies',
'orderby' => 'date meta_value_num',
'meta_key' => 'wtf_rscore',
'posts_per_page' => 14,
]);