Hi,thanks for using JustAnswer.com I am Cris. Sorry to hear about your issue, have you tried a hard reset?
A hard reset will not ask you for your password. By performing a hard reset you will be restoring the phone back to factory settings and it will wipe everything out of the phone. If you don't know or can't retrieve the password ***** your Gmail account this will be your only viable option.
I can provide you instructions if you would like to do the hard reset.