My phone says it’s been hacked

Please post a screenshot - phones don't normally do this.

Possibly a scam - do NOT tap any links in the message.

But if you are concerned, changing your apple ID password never does any harm as long as you securely record the new one.

A non-jailbroken phone cannot be hacked. As noted, why do you think your’s was?

What says it's been hacked? An email, message, web page or popup from one? In any of these cases, it's a scam. Delete and ignore.

Yes, I understand you mean your phone.

The follow up sentence asks what on the phone is telling you this. An email, message, web page or popup from one?

How did the phone tell you? You need to provide more information if you want people to help you. Again - screenshot if you can.

HOW did the phone tell you this?

Email? Message? Text? Web site you were on?