GUIText appear too small on game screen

I have a problem where no matter how big I set the size of the GUIText, it remains the same miniature size on my phone. It is anchored to the upper left of the screen. I attached the GUIText to a normal game object. The script Im using is-

 using UnityEngine;
 using System.Collections;
 
 public class ScoreSystem : MonoBehaviour {
 
     static int score = 0;
     static int highScore = 0;
 
     static public void AddPoint(){
                 score++;
 
                 if (score > highScore) {
                         highScore = score;
                 }
         }
     void Start() {
         PlayerPrefs.GetInt("highScore", 0);
     }
     void OnDestroy(){
         PlayerPrefs.SetInt ("highScore", highScore);
         PlayerPrefs.Save ();
         score = 0;
           }
                          
     void Update () {
         guiText.text = "S:" + score +  "\nHS:" + highScore;
     
     }
 }
 

Thanks, fatmanspineapple