question

using PlayFab.ServerModels;
using PlayFab.BuffbaerMuses.Models;
using System;

using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace PlayFab.BuffbaerMuses.Util{
    public class StatisticUtil{
        public static async Task UpdateStatValue(string playFabId, string statName, int deltaValue){
            var apiSettings = new PlayFabApiSettings
            {
                TitleId = Environment.GetEnvironmentVariable("PLAYFAB_TITLE_ID", EnvironmentVariableTarget.Process),
                DeveloperSecretKey = Environment.GetEnvironmentVariable("PLAYFAB_DEV_SECRET_KEY", EnvironmentVariableTarget.Process)
            };

            var serverApi = new PlayFabServerInstanceAPI(apiSettings);

            var currentStatResult = await serverApi.GetPlayerStatisticsAsync(
                new GetPlayerStatisticsRequest{
                    PlayFabId = playFabId,
                }
            );
            
            var newValue = deltaValue;

            var updateStatResult = await serverApi.UpdatePlayerStatisticsAsync(
                new UpdatePlayerStatisticsRequest{
                    Statistics = new List<StatisticUpdate>{
                        new StatisticUpdate{
                            StatisticName = statName,
                            Value = newValue
                        }
                    },
                    PlayFabId = playFabId
                });
        }

        public static async Task CheckStatValue(string playFabId, string statName, int rewardValue){
            var apiSettings = new PlayFabApiSettings
            {
                TitleId = Environment.GetEnvironmentVariable("PLAYFAB_TITLE_ID", EnvironmentVariableTarget.Process),
                DeveloperSecretKey = Environment.GetEnvironmentVariable("PLAYFAB_DEV_SECRET_KEY", EnvironmentVariableTarget.Process)
            };
            var serverApi = new PlayFabServerInstanceAPI(apiSettings);

            var currentStatResult = await serverApi.GetPlayerStatisticsAsync(
                new GetPlayerStatisticsRequest{
                    //OnGetStatistics,
                    //error => Debug.Log(error.GenerateErrorReport())
                    //PlayFabId = playFabId,
                    
                }
            );

            /*if(currentStatResult == "Premium Choices"){
                AddVC(playFabId,50);
            }*/
            /*foreach(var eachStat in currentStatResult){
                switch(eachStat.StatisticName){
                    case "Premium Choices":
                        if(eachStat.Value == 1){
                            //Reward player 50 coins.
                            
                            //serverApi.AddUserVirtualCurrency(playFabId, VirtualCurrency:"BC", ArgumentOutOfRangeException:"50");
                        }
                        //Premium Choices function after checking the condition

                }
            }*/

            
                
            

        }

        void OnGetStatistics(GetPlayerStatisticsResult result){

        }
        public static async Task AddVC(string playFabId,int vc){
            var apiSettings = new PlayFabApiSettings
            {
                TitleId = Environment.GetEnvironmentVariable("PLAYFAB_TITLE_ID", EnvironmentVariableTarget.Process),
                DeveloperSecretKey = Environment.GetEnvironmentVariable("PLAYFAB_DEV_SECRET_KEY", EnvironmentVariableTarget.Process)
            };

            var serverApi = new PlayFabServerInstanceAPI(apiSettings);
            var request = new AddUserVirtualCurrencyRequest{ 
                    PlayFabId = playFabId,
                    VirtualCurrency = "BC",
                    Amount = vc 
                };
                
            var AddUserVirtualCurrencyResult = await serverApi.AddUserVirtualCurrencyAsync(request);
            }

        
    }
}

I am trying to access only one of the statistic to check if it hits my condition.
I am not able to do so. Every I have checked, It's always GetPlayerStatisitcs, but as you can see i am using async. How can i get one statistic value?