My phone was hacked by someone in America

1. There is no known way to remotely hack an iOS device. Even the FBI in America was unable to get into a phone they had in their physical possession. A long distance hack like that is closer to fiction than reality.

2. How could you possibly know it was form america?

3. If you think any accounts may have been compromised its best to change passwords.

Beyond that, perhaps you'd like to explain why you believe it was hacked. Maybe someone can help you identify the real issue.

Your phone was not hacked at all unless it's jailbroken. Your account(s) may have been compromised... change your passwords.

The pst time zone is used in America sure, but its just an expression of time. I can be in China, and still tell you that the time 5pm PST. Which would be around 8am in China. Its just a general way of conveying time. It does not mean it happened in the U.S.

Also that does not in any way imply your iPhone was hacked. It suggests your Apple ID may have been compromised, but that is not your iPhone.

As mentioned, there are no known methods of remotely hacking an iPhone.

Change your Apple ID password. And read here for more information about it:

If you think your Apple ID has been compromised - Apple Support

Can you provide a screenshot of that email? If so, please provide, and make sure that you redact any personal identifying information.