What am i overlooking? -GameObject.GetComponent()-

Okay so essentially I am trying to make a Door/Debris disappear when I press the E key and have enough points. Here is my code(s)

 public int Points;


 // Use this for initialization
 void Start ()
 {
     Points = 500;
 }
 
 public void AddPoints(int PointsToAdd)
 {
     Points += PointsToAdd;
 }

 public void MinusPoints(int PointsToMinus)
 {
     if (Points - PointsToMinus < 0) 
         {  //  }
     else { Points -= PointsToMinus; }              
 }

I have attached that to the item Cam and it has no compiler error but when I use this.....

 public GameObject Cam;
 public GameObject Buytext;
 public GameObject Barrier;
 public GameObject SorryText; 

 // Use this for initialization
 void Start ()
 {
     Buytext.SetActive(false);
 }
 
 void OnTriggerEnter()
 {
     Buytext.SetActive(true);
 }

 void OnTriggerStay()
 {
     if (Input.GetKeyDown(KeyCode.E))
         {
             Barrier.SetActive(false);
             Buytext.SetActive(false);
         }
 }

 void OnTriggerExit()
 {
     Buytext.SetActive(false);
 }

Earlier I had tried to call upon my points variable in the if statement under OnTriggerStay like this...

     if (Input.GetKeyDown(KeyCode.E  &  Cam.GetComponent<PlayerPoints>.Points = 500) {

             Barrier.SetActive(false);
             Buytext.SetActive(false);

}

but it gave me the error :

CS0119 'GameObject.GetComponent()' is a method, which is not valid in the given context

What am I doing wrong or am overlooking???