How can I set up a counter and have objects use the value?

Hiya! I'm quite new to unity and I'm just a bit confused! I am trying to get an 'invisible' counter on my program, so that whenever I click an object, it generates a vector based on the value of the counter, then increases the value of the counter so that the when the next object is clicked, a different vector is generated. My code at the moment is below:

 public class MoveCipher : MonoBehaviour {
 
 
         bool moving = false;
         Vector3 End;
         
         public static int positionCount = 0;
         
        
 
 
         public void StartMove()
         {
             FindEnd();
             moving = true;
         }
 
         void FindEnd()
         {
         End.x = 665;
         End.z = 0;
         End.y = 540 - (70 * positionCount);
         }
 
         public void Update()
         {
             if (moving == true)
             {
                 Debug.Log("Update run, moving true");    
             transform.position = Vector3.Lerp(transform.position, End, 1);
             positionCount++;
 
             }
         }
     }

I have eight objects and the end result (hopefully) is to have them align into list in an order based on the user input. I tried creating a separate class for the counter, but I'm not sure how to call/change the value of the counter. Please help this noob!