Think My I phone got hacked.

Maybe this link will help...

Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support

Your phone has not been hacked.

The message that you have seen is a scam that is trying to trick you into buying useless software or worse......having you provide personal information about yourself.

Delete the message. Do the same for the messages like this that you will see in the future.

Were all of your contacts deleted? Those things are usually scams but it does indicate that you visited a website either accidentally or intentionally or were taken to a website without your interaction that does that sort of thing. Has your phone been acting normally since? How did you find the website that opened that message?