In games, it says like 0-2 black is victorious or 2-0 white is victorious? Why not 1-0 or 0-1? I don't know the rules so I don't know this... can somebody help me?

In some countries giving results in form 1-0, 0-1, 1/2-1/2 is considered as valid tournament practice in draughts.
However, in majority of countries 2-0, 0-2, 1-1 is preferred. Technically, it allows arbiter to do his / her job quicker.

By the way, you can choose this setting under preferences.

Ok thanks for saying.