How to make number reduction?

Question

C++ / C#

How to make it so that when I clicked up to 1 thousand, it was shown not like this: "1000 $", but like this: "1k $"
here is the code:

public Text scoreText;
private int score;
public void OnClick()
    {
        score++;
        scoreText.text = "$"+score ;
            

    }

Answer 1

Divide score by 1000.