Osid

After receiving that mail message, if you logged into any link to an “Apple login portal” provided by that scam mail message, then your Apple ID has been compromised. The Apple ID was compromised by logging into the fake login portal.

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

It's fake. Forward it to reportphishing@apple.com as an attachment and then delete it.

If an Apple ID actually gets locked or disabled, its owner will be told when they try logging into it instead of through email.

(205629)

It’s a scam

Apple will never contact you “out of the blue” in such a manner.

If they suspected that there was a security issue, they’d lock your account and wait for YOU to contact THEM.

Have you checked Settings/Screen Time for any restrictions?