Final score in new scene

Hi, I have a stupid problem with the score. When I end a level I have to leave the screen a summary of the score. So to communicate between the two scripts I have been following these tips:

Script A:
var scoreManager : Score;
function Update () {

scoreManager.totalScore();

}

Script Score:

function totalScore(){

punteggio +=1;
}

The problem is that it gives me an error saying “”

there is code of SCHERMATA1.js

#pragma strict

function Start () {

}

function Update () {

}

function OnGUI () {
GUI.Label (Rect (Screen.width/2-50, Screen.height/2-25, 100, 50), “FINE LIVELLO 1”);

 if (GUI.Button(Rect(10,10,80,50),"Livello 2")){
 
 //CODE
 }
  
 GetComponent(Score).punteggio;

}

And there is code of Score.js

ar punteggio : int = 0;

function Start(){

}

function update(){

}

function OnGUI(){

GUI.Label (Rect (10, 10, 100, 20), "Score: " + punteggio); //disegno label su schermo

}

function aggiorna(){

  punteggio += 1;   
   

  }