Unity High Score System

Ok in my flappy bird clone i need to make it so it shows 4 scores and 1 high score and show the current score
i have it showing the high score and the last games store using this but how do i save all scoreS?

public int curScore; 
// Highest score
private int highscore;

void Update () {
		// replace score with new highscore
		if (showGameOver && curScore > highscore)
		{
			// Set the highscore to our current score
			highscore = curScore;
			// savign highscore
			PlayerPrefs.SetInt("Highscore", highscore);
		}
	}

how can i go about adding in some more scores to sort through

private int score4;
	private int score3;
	private int score2;
	private int score1;

like this?

I think you should set another prefs to save the another score.

    public int curScore; 
    private int highscore;
    var secondHigh : GUIText;
    void Update () {
            // replace score with new highscore
            if (curScore > highscore)
            {
                // Set the highscore to our current score
                highscore = curScore;
                // savign highscore
                PlayerPrefs.SetInt("Highscore", highscore);
            }
            if(curScore < PlayerPrefs.GetInt("Highscore"))//
    {
               PlayerPrefs.SetInt("Highscore0",curScore);//save new score
               secondHigh.text= "Second Highscore" + PlayerPrefs.GetInt("Highscore0");// display
    
    }
        }

[System.Serializable]
public class Score{
public int score;
public string prefName; //write unique save string from inspector
}
public Score scores;

private void SaveScore(int index){
    PlayerPrefs.SetInt(scores[index].prefName, scores[index].score);
}

private int GetScore(int index){
    return PlayerPrefs.GetInt(scores[index].prefName, 0);
}

private void SaveAllScores(){
    for(int i = 0; i < scores.Length; i++){
        SaveScore(i);
    }
}

private void LoadAllScores(){
    for(int i = 0; i < scores.Length; i++){
        scores[index].score = GetScore(i);
    }
}

Edit: And instead of saving everything every frame, you should save it only when you score has changed - added.