Problems with GUI Text and adding score to it

   using UnityEngine;
   using UnityEngine.UI;
   using System.Collections;

          public class Score : MonoBehaviour {
 public Text scorepoint;
 static int score = 0;
 static int highScore = 0;
 void Start()
 {
     scorepoint = GetComponent<Text>();
 }

 void FixedUpdate()
 {
     score++;
     if (score > highScore)
     {
         highScore = score;
     }
 }
 void Update()
 {
     scorepoint.text = "Score: " + score + "\nHighscore: " + highScore;
 }

} I've found this code that was supposed to fix my problem , but apparently not. I want 1 score added every frame, but right now the GUI text doesn't change.

Any help is appreciated