Scriptum/Assets/LevelUpPopUp.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class LevelUpPopUp : MonoBehaviour
{
    public int lvlup;
    public GameObject lvlUpPopUpPanel;
    public GameObject border;
    public GameObject border1;

    void Update()
    {
        lvlup = PlayerPrefs.GetInt("LvlUpPopUp");
        if (lvlup == 1)
        {
            StartCoroutine(LvlUpTimer());
        }
    }

    IEnumerator LvlUpTimer()
    {
        lvlUpPopUpPanel.SetActive(true);
        border.SetActive(true);
        border1.SetActive(true);
        PlayerPrefs.SetInt("LvlUpPopUp", 0);
        yield return new WaitForSeconds(5);
        lvlUpPopUpPanel.SetActive(false);
        border.SetActive(false);
        border1.SetActive(false);
    }

}