this iphone was lost and erased. sign in with the apple id that was used to erase this iphone

If you are the original owner of the phone and have forgotten your Apple ID, start here:

https://iforgot.apple.com

If this is a phone you found, it is useless to you. There is no one who can put you in touch with the original owner and no way to bypass that message.

You will need to get in touch with the original owner and have them remove the phone from their account. If you can't do that the phone is useless to you. Apple will not assist you.