We need a lot more info to help you out: What phone/tablet/device is this? What carrier? What version of Android were you on prior to Android 5.0 and what method did you use to update it? Can you share screenshots? Why do you need to create a Google Account, shouldn't you just be signing on with the account you used prior to the upgrade? As many details as possible would be helpful... the universe of possibilities is just too large to start providing an answer or suggestion.