How do you make your game have moves count down to end the game?

You haven't included enough information for an accurate answer. How are you moving your character? Where is the script? What constitutes a move? The actual code to do what you want is only a few lines, but it is highly dependent on the code you have to move your object.

Im using a game$$anonymous$$anager script like this:

using UnityEngine; using System.Collections;

public class Game$$anonymous$$anager : $$anonymous$$onoBehaviour {
public static Game$$anonymous$$anager instance; public GameObject[] playingObjectPrefabs; public GameObject[] horizontalPrefabs; public GameObject[] verticalPrefabs; public GameObject universalPlayingObjectPrefab; public GameObject []jellyPrefab;

 internal int numberOfColumns;
 internal int numberOfRows;
 public float gapBetweenObjects = .7f;
 public float swappingTime = .8f;
 public float objectFallingDuration = .5f;
 internal float initialObjectFallingDuration;
 internal bool isBusy = false;
 public int totalNoOfJ$$anonymous$$s = 0;

 public iTween.EaseType objectfallingEase;

 internal Text$$anonymous$$esh scoreText;
 internal Text$$anonymous$$esh jellyText;
 int score;

 internal static int numberOfItemsPoppedInaRow = 0;
 

 void Awake()
 {
     instance = this;
 }

 void Start () 
 {
     scoreText = GameObject.Find("Score Text").GetComponent<Text$$anonymous$$esh>();
     jellyText = GameObject.Find("Jelly Text").GetComponent<Text$$anonymous$$esh>();
     initialObjectFallingDuration = objectFallingDuration;
     numberOfColumns = LevelStructure.instance.numberOfColumns;
     numberOfRows = LevelStructure.instance.numberOfRows;
     numberOfItemsPoppedInaRow = 0;
     scoreText.text = "Score : " + score.ToString();
     jellyText.text = "Jelly : " + totalNoOfJ$$anonymous$$s.ToString();
 
 }

 internal void AddScore()
 {
     int temp = 10 * numberOfItemsPoppedInaRow * (numberOfItemsPoppedInaRow / 5 + 1);
   //  print(temp);
     score += temp;
     scoreText.text = "Score : " + score.ToString();
 }



   

}

But I don't know how to have a move counter and end the game with a total score.

move counter

and end the game with a GUI score at the end.