is this a scam?

It is indeed a scam. The callers are criminals trying to steal your personal and financial information. Hang up on them, repeatedly if needed.

Avoid phishing emails, fake 'virus' alerts, phony support calls, and other scams - Apple Support

I’m getting phone calls on my landline 2 and 3 times a day claiming to be Apple notifying me of a breach on my account. The Apple ID and the call back numbers are listed Apple numbers, but the calls are robocalls and I’m afraid to hang on the line to talk. How can I stop these annoying and alarming calls?

You’re welcome. The blocking may provide short term relief from the calls, but the callers use number spoofing to pretend to be calling from a legitimate business.