Fake or real?

Hi all, I currently work full-time but I wanted to supplement with some online work. Someone reached out to me via text. I don't know if recruiters/employers can get your phone number from LinkedIn? She says she works at seoclarity. She gave me the website and I'm supposed to do some training and get paid for it. I'm very suspicious. How do I make sure the remote job is legitimate? Thank you in advance.