Most domain renewal scams come in the form of emails, mail, or phone calls. The domain scams begin by asking if you’re the owner of the domain then they tell you that it’s going to expire soon and to pay if you want to renew the domain. 

Google does do domain renewal but they will contact you one month and one week before expiration via email from a ‘@google.com’ email address. Please be warry for misspellings of the sender’s address. Most scammers use ‘@goggle.com’ or common misspellings of google.