How to set a score limit

I am making a survival game. The player have to at least score 500 point or more and if the player don’t score at 500 points the level restart. How do I script that in c sharp.

private int score;

public void AddToScore (int addedAmount){
        score += addedAmount;
}

public bool CheckScoreAmount (){
        bool canContinue;
        if(score < 500){
              canContinue = false;
        } else {
              canContinue = true;
        }
}