How do I check spam mail?
Yes
iPhone XR, iOS 15
Read again -> Related Article -> Identify and filter junk mail in iCloud
See the following Apple articles:
Recognize and avoid phishing messages, phony support calls, and other scams
Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support
Phony "tech support" / "ransomware" popups and web pages
Phony "tech support" / "ransomware" popup… - Apple Community
If you think your Apple ID has been compromised
If you think your Apple ID has been compromised - Apple Support
Identify legitimate emails from the App Store or iTunes Store ->
Identify legitimate emails from the App Store or iTunes Store – Apple Support (UK)