Get meta value based on user id

get_users is for retrieving users, not meta.

To get the user meta of a user where $user_id is that users ID, you can use get_user_meta and it should work the same as the other meta functions:

$meta_value = get_user_meta( $user_id, 'the meta key', true );

You can use $user_id = get_current_user_id(); to retrieve the ID of the currently logged in user, make sure to check that the user is logged in first though.