Account already exists for your email address
If you see a message that there's a Google Account registered to your email address, but you didn't create it, it's likely that another user entered your email address by mistake while trying to create an account. If you don't want to use this account, you don't need to take any action.
If you decide to use this account, or delete it, you'll first need to reset the account password. To do so, please follow the instructions at this help article.
If you believe that someone is impersonating your identity online, please contact your local authorities.