Now shows wave num

Assets/Prefabs/UI/GameUI.prefab

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Assets/Scripts/Manager/EnemySpawnManager.cs

@@ -6,6 +6,8 @@ using UnityEngine.UI;
 
 public class EnemySpawnManager : MonoBehaviour
 {
+    public int WaveNum = 0;
+
     public bool HasStarted = false;
     public bool IsAutoPlaying = false;
 
@@ -24,8 +26,14 @@ public class EnemySpawnManager : MonoBehaviour
     private Queue<Wave> waveQueue;
     private List<GameObject> SpawnedEnemies = new();
 
+    public static EnemySpawnManager Instance;
+
     private void Awake()
     {
+        if (Instance != null)
+            Destroy(Instance);
+        Instance = this;
+
         waveQueue = new Queue<Wave>(levelDefinition.Waves);
 
         if (PlayButton != null)
@@ -74,6 +82,7 @@ public class EnemySpawnManager : MonoBehaviour
     void PopWave()
     {
         time = 0;
+        WaveNum++;
 
         Wave spawnWave = waveQueue.Dequeue();
         for (int i = 0; i < spawnWave.groups.Length; i++)

Assets/Scripts/UI/WaveUIDisplayer.cs

@@ -0,0 +1,14 @@
+using System.Collections;
+using System.Collections.Generic;
+using TMPro;
+using UnityEngine;
+
+public class WaveUIDisplayer : MonoBehaviour
+{
+    [SerializeField] private TMP_Text WaveDisplayText;
+
+    private void Update()
+    {
+        WaveDisplayText.text = EnemySpawnManager.Instance.WaveNum.ToString();
+    }
+}

Assets/Scripts/UI/WaveUIDisplayer.cs.meta

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