how to make the sprite invinsible and reappear and how to call the sprite data from another script

Hi everyone. I need some help on my project. can you guys help me. I follow the tutorial of the 2048 puzzle and my problem is when the tutorial need to reset the gamefield at the beginning of the game. I had no knowledge in the disappearing and reappearing the sprites and also in the passing of the sprite data from the tileStyle Script to Tiles script.. i am currently doing my own version of 2048 puzzle I want it to be shapes instead of numbers.. these are my codes..

 public class Tiles : MonoBehaviour
 {
 // these there from another script
     public bool mergeThisTurn = false;
     public int indRow;
     public int indCol;
 
     public int Number
     {
        get
        {
            return number;
        }
 
         set
        {
            number = value;
            if (number == 0)
           {
                SetEmpty();
 //                setDeactive();
            }
            else
            {
                ApplyStyle(number);
                SetVisible();
 //                setActive();
            }
 
         }
  }
 
     private Text NO;
     private int number;
     private Image Tileimage;
     private Animator anim;
     public GameObject go;
 
     void Awake()
     { 
         go = new GameObject ();
         go.AddComponent<SpriteRenderer> ();
         anim = GetComponent<Animator> ();
         NO  = GetComponentInChildren<Text>();
         Tileimage = transform.Find ("numberedCell").GetComponent<Image> ();
     }
     // play animation
     public void playMergeAnimation()
     {
         anim.SetTrigger ("Merge");
     }
 
     public void playAppearAnimation()
     {
         anim.SetTrigger ("Appear");
     }
 
     //apply each of the tile with the tilestyle.
     void ApplyTileStyle (int index)
     {
         go.GetComponent<SpriteRenderer> ().sprite = TileStyle.Instance.Tilestyles [index].seperite;
         NO.text= TileStyle.Instance.Tilestyles[index].mark.ToString();
         Tileimage.color = TileStyle.Instance.Tilestyles [index].tileColor;
     }
 
     void ApplyStyle(int num)
     {
         switch(num)
         {
             case 2:
                 ApplyTileStyle(0);
                 break;
 
             case 4:
                 ApplyTileStyle(1);
                 break;
 
             case 8:
                 ApplyTileStyle(2);
                 break;
 
             case 16:
                 ApplyTileStyle(3);
                 break;
 
             case 32:
                 ApplyTileStyle(4);
                 break;
 
             case 64:
                 ApplyTileStyle(5);
                 break;
 
             case 128:
                 ApplyTileStyle(6);
                 break;
 
             case 256:
                 ApplyTileStyle(7);
                 break;
 
             case 512:
                 ApplyTileStyle(8);
                 break;
 
             case 1024:
                 ApplyTileStyle(9);
                 break;
 
             case 2048:
                 ApplyTileStyle(10);
                 break;
 
             case 4096:
                 ApplyTileStyle(11);
                 break;
 
             case 8192:
                 ApplyTileStyle(12);
                 break;
 
             case 16384:
                 ApplyTileStyle(13);
                 break;
 
             case 32768:
                 ApplyTileStyle(14);
                 break;
 
             default:
                 Debug.Log("please check the numbers");
                 break;
         }
 
     }
 
     // to set the visibility of the tiles.
     private void SetVisible()
     {
         Tileimage.enabled = true;
         NO.enabled = true;
         go.SetActive (true);
     }
 
     private void SetEmpty()
     {
         Tileimage.enabled = false;
         NO.enabled = false;
         go.SetActive (false);
     }
 }

and this is the TileStyle Script

 public class tileStyle
 {
     // these will appear in the inspector
     // input the style of the tiles.
     public int mark;
     public Sprite seperite;
     public Color32 tileColor;
 }
 public class TileStyle : MonoBehaviour {
 
     //singleton
     public static TileStyle Instance;
     public tileStyle[] Tilestyles;
 
     void Awake()
     {
         Instance = this;
     }
 }

i am sorry about the bad english and thank you in advance.. (^_^)