google play get score from leaderboard

like the title says... i have looked over pretty much every thread, couldnt get it done. i tried with the following two calls:

 ILeaderboard lb = PlayGamesPlatform.Instance.CreateLeaderboard();
                 lb.id = leaderBoard;
                 lb.LoadScores(ok =>
                 {
                     if (ok)
                     {
                         //LoadUsersAndDisplay(lb);
                         score = (int)lb.localUserScore.value;
                         Debug.LogFormat("User score in leaderboard: {0}", score);
                     }
                     else
                     {
                         Debug.Log("Error retrieving leaderboardi");
                     }
                 });

and

 PlayGamesPlatform.Instance.LoadScores(
                         leaderBoard,
                         LeaderboardStart.PlayerCentered,
                         1,
                         LeaderboardCollection.Public,
                         LeaderboardTimeSpan.AllTime,
                         (data) =>
                         {
                             if (data.Valid)
                             {
                                 score = (int) data.PlayerScore.value;
                                 Debug.Log("score from inside leaderboard: " + data.PlayerScore.value);
                                 Debug.Log("formated score from inside leaderboard: " + data.PlayerScore.formattedValue);
                             }
                             else
                             {
                                 Debug.Log("data invalid in leaderboard");
                             }    
                         });
                 }