how to make a succession(n+1,5n,etc) that work in if statement?

hi, I have a problem here, I want to make a succession (n+1,5n,etc) that when my variable scorepoint get in the multiple of 5 (5x1= 5,5x10= 50,etc) make that my sprite bounce in the box please i would like help.

 using UnityEngine;
 using System.Collections;
 public class InteracionConRebounce : MonoBehaviour {
 
     Collider2D co;
     Rigidbody2D rb;
     public int scorepoint;
     public float poderDeFuerza;
    
     // Use this for initialization
     void Start () 
     {
         
         co = GetComponent<Collider2D> ();
         rb = GetComponent<Rigidbody2D> ();
       
         if
     }
     
     // Update is called once per frame
     void Update () 
     {
     
         Vector3 mp = Camera.main.ScreenToWorldPoint(Input.mousePosition);
         if (Input.GetMouseButtonDown (0))
         {
             if (co.OverlapPoint(mp))
             {
                 if (scorepoint == 0)//here i want the succession
                 {
                     rb.AddForce(new Vector2(1000,0));
                     //here i want my sprite bounce
                 }
                 if (scorepoint > 0)
                 {
                     Debug.Log("dectetado2");
                     rb.gravityScale += 0.05f;
                 }
                 Debug.Log("dectetado");
                 rb.AddForce(new Vector2(0, poderDeFuerza));
                 scorepoint++;
             }
         }
       
     }
  
 }
 

here is all the code