Yeah, I've had mine for barely three weeks and already scratched. It's really only noticeable if you look closely, but the chrome finish is way too thin. I haven't even done anything that would be considered really active with it on.
I did a bit of research and this looks to be a good solution(just take out the space before the "com". I can't post links yet):
cnet. com/how-to/remove-scratches-and-polish-your-apple-watch/
Going to try it out this weekend, but good luck with yours.