Q: Possible Scam?

Ignore - delete - do not click on anything; do not call and do not enter any identifying/personal info. It's a scam.

text messages are the "next wave" of SCAMs (after emails)

  Phishing & Other Suspicious Emails - Apple Legal 

  Identifying legitimate emails from the iTunes Store - Apple Support 

  Identifying fraudulent "phishing" email - Apple Support 

  Report iMessages that look like spam or junk - Apple Support

I am unsure where the iMessages reporting link goes... you could double  report using email from the last link AND reportphishing@apple.com

More like an old wave making a comeback.