Warning Spyware

It’s certainly bogus.

If this arrived as an email, delete with extreme prejudice - remembering to also delete it from your Trash/Bin

If this appeared within a Safari browser window, close your browser, clear your cache, then install 1Blocker for Safari.

To clear your cached website data and cookies:

Settings > Safari > Clear History & Website Data

1Blocker for Safari:

https://apps.apple.com/gb/app/1blocker-for-safari/id1365531024

Now relax 🙂

Scam.

Oh, that’s hilarious.

Mail messages, email sending addresses, telephone numbers on caller-ID, all can be spoofed.

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

Identify legitimate emails from the App Store or iTunes Store - Apple Support

Enable two-factor authentication, as that’s a defense against common scams.