Ive been trying to get a score counter to work for 2 weeks please help.

I have no idea what is going on with this game it is a very simple 2d game with cubes that spawn in a plane (enemy's) you have to collect all of the gold cubes to win. All i'm trying to do is make it so when I collect one of those cubes my score counter goes up by one I keep getting this error NullReferenceException: Object reference not set to an instance of an object ScoreCounter.Update () (at Assets/ScoreCounter.cs:26)

I don't understand what is wrong with my script it should just be a very simple script.

 using UnityEngine;
 using UnityEngine.UI;
 using System.Collections;
 
 public class ScoreCounter : MonoBehaviour
 {
     public static int score;        // The player's score.
     
     
     Text text;                      // Reference to the Text component.
     
     
     void Awake ()
     {
         // Set up the reference.
         text = GetComponent <Text> ();
         
         // Reset the score.
         score = 0;
     }
     
     
     void Update ()
     {
         // Set the displayed text to be the word "Score" followed by the score value.
         text.text = "Score:" + score;
     }
 }