Show list of users sorted by highest point total

Nevermind 🙂 I have figured this out by using

global $wpdb;
$topuser = array();
$html = "";	

// query points by each user
$users = $wpdb->get_results("SELECT ID FROM $wpdb->users ORDER BY ID");
foreach ( $users as $user ) {
        $views = get_user_meta( $user->ID, 'rfp_post_karma', 1 );
    $topuser[] = array( 'id' => $user->ID, 'views' => $views);
    wp_reset_query();
}

// function to sort array based on views count
function sortViews($a, $b) {
    return $b['views'] - $a['views'];
}
usort($topuser, 'sortViews'); // sort the array