How do you set a score limit to end the game?

Im working on a Pong remake and after one of the players score 5 points I want the game to show who won (i.e player 1 wins or player 2 wins) then stops the game and returns to the main menu. How do I set a score limit to end the game? Right now the game goes on forever, I have everything working except my main menu( still trying to figure out the scene manager) and the score limit to stop gameplay. Thanks in advance! Here's what I have so far attached to the ball.

 pragma strict
 import UnityEngine.UI;
 
 var cSpeed:float = 10.0;
 var sFactor:float = 10.0;
 var speed:float = 5.0;
 
 static var playerScore:int = 0;
 static var enemyScore:int = 0;
 
 function Start ()
     {
     GetComponent.<Rigidbody>().AddForce(10,0,0);
     }
 
 function Update ()
 {
     var cvel = GetComponent.<Rigidbody>().velocity;
     var tvel = cvel.normalized * cSpeed;
     GetComponent.<Rigidbody>().velocity = Vector3.Lerp(cvel,tvel,Time.deltaTime * sFactor);
 
 if (transform.position.x > 23)
     {
         playerScore++;
          transform.position.x = 0;
          transform.position.y = 0;
          }
     if (transform.position.x < -23)
     {
         enemyScore++;
          transform.position.x = 0;
          transform.position.y = 0;
         }
 
 }