Getting meta_values ​of single post

there is an add to favorites button on my single post page. These records are recorded in the wp_postmeta table as follows.

How can I get how many times the active single post page has been favorited.

It is necessary to count 1,2,3 values ​​in meta_value, but I couldn't find any results how to get it.

With this code, I can get the favorite posts of the logged in user. But I couldn't figure out how to use it on single post page.

$sql=$wpdb->prepare("SELECT * FROM $wpdb->posts WHERE post_type = %s and post_author='%d' and post_status IN ('publish','pending','draft' )  ",$directory_url,$current_user->ID );  
    
    $authpr_post = $wpdb->get_results($sql);
     $total_post=count($authpr_post);   
    $iv_redirect_user = get_option( '_profile_public_page');
    $reg_page_user='';
    if($iv_redirect_user!='defult'){ 
        $reg_page_user= get_permalink( $iv_redirect_user) ;                                          
    }   
    if($total_post>0){
        $i=0;
        foreach ( $authpr_post as $row )                                
        {       
                $user_list= get_post_meta($row->ID,'_favorites',true);  
                $user_list_arr2 = array();                                               
                $user_list_arr = array_filter( explode(",", $user_list), 'strlen' ); 
                $i=0;
                foreach($user_list_arr as $arr){
                    if(trim($arr)!=''){
                        $user_list_arr2[$i]=$arr;
                        $i++;
                    }
                }
            if(sizeof($user_list_arr2)>0){  
                
                    $args_users = array ('include'  =>$user_list_arr2,);
                    $user_query = new WP_User_Query( $args_users );
                    
                if ( ! empty( $user_query->results ) ) {
                    foreach ( $user_query->results as $user ) {

                    }
                    
                }
            }       
        }
    }