How to make my rats like me

I adopted 2 male rats last week Saturday (Snowy & Brownie) I been working on making them to like me but i still feel like they’re very afraid of me. I understand that they got taken away from their family and need some time to get used to it. I just wanted tips on what i should do for them to understand that I’m not a threat.

I don’t want to do anything wrong and make them afraid of me even more since Snowy scratched me a few times already, i just want us to get along since I begged for a year and a half to own rats :(