How do I access scripts

Hello I trying to access two scripts . Im try to access the MyClock Script and the ScoreManager Script from the PlayerPreference Script. I've have type in the codes I need in the PlayerPreference script , so I can access ScoreManager . I gotten an error error CS0246: The type or namespace name `scoreManager' could not be found. Are you missing a using directive or an assembly reference? I thought I had code it right . Here is the scripts :

using UnityEngine.SceneManagement; using UnityEngine.UI; using UnityEngine;

public class PlayerPreference : MonoBehaviour { private scoreManager scoreManagerScript; private MyClock MyClockScript;

  void Awake () 
  {
      scoreManager = GetComponent<ScoreManagerScript>();
      myClock = GetComponent<MyClockScript>();
  }
  
  void Update(){
      
      if ((myClock != NULL) && (scoreManager != NULL)  &&
  (myClock.m_leftTime >= scoreManager.score))
  {
       SceneManager.LoadScene("time");
      
  }
      
  }     
  
  }
  
  

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

public class ScoreManager : MonoBehaviour { public static int score; private Text text;

  void Awake () 
  {    
      text = GetComponent <Text> ();
      score = 0;


  
  }
 
  void Update ()
 {
          text.text = "Score :" + score;
      }
  
  

}