If you get a DM saying "call me the Fediverse chick", it's a spam. Don't click the links, but DO report it!
Reports from users are really important, especially if they are about spam DMs because no one else can see the spam except the user.
You can report posts by clicking ⋯ on the post and selecting "Report". When you report it, make sure to select the option to forward the report to the server it came from so that the admin there can delete the spammer's account.