Player Prefs to Store High scores

Hi all I’m currently trying to implement highscores in a game I’m implementing. The scores page has the following script;

using UnityEngine;
using System.Collections;

public class Score : MonoBehaviour {
public static int score = 0;

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

}

I’d like to make the score be available in a leaderboards menu item if they have beaten a high score otherwise the static score would be stored but I’m unsure how to implement this. I’ve read PlayerPrefs would be a good start but can’t find a tutorial for dummies after carrying out research. I’d like to display top 5 high scores in the leaderboards scene.

Here is a bare bones example.

using UnityEngine; 
using System.Collections;

public class Score : MonoBehaviour { 

public int score = 0;
public int highScore = 0;
string highScoreKey = "HighScore";

	void Start(){
		//Get the highScore from player prefs if it is there, 0 otherwise.
		highScore = PlayerPrefs.GetInt(highScoreKey,0);	
	}

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

	void OnDisable(){
		
		//If our scoree is greter than highscore, set new higscore and save.
		if(score>highScore){
			PlayerPrefs.SetInt(highScoreKey, score);
			PlayerPrefs.Save();
		}
	}

}

Then a leaderBoard script.

using UnityEngine; 
using System.Collections;

public class LeaderBoard : MonoBehaviour { 

public int highScore;
string highScoreKey = "HighScore";

	void Start(){
		highScore = PlayerPrefs.GetInt(highScoreKey,0);
		//use this value in whatever shows the leaderboard.
	}

}

**The LeaderBoard script is in a different scene **