Weird message

No. AS long as you didn't follow the link of the popup and enter any sensitive information.

If you get popup messages like that or suspicious emails, just close and delete them right away. Don't tap any links and don't enter any passwords or banking info.

Beware of --> Phishing & Other Suspicious Emails 

Know how to --> Identify legitimate emails from the App Store or iTunes Store 

If you received an email about a subscription or Apple Music charge and you're not sure if it's real, check to make sure that it's a legitimate email from Apple.

Was this popup in a web browser? If so it's just a scam.

a screenshot would help.

just a phishing attempt on a website.

Be careful which website you visit.