I keep getting this message

Someone is trying to trick you into buying useless software or worse......having you provide your personal details so the bad guys can get into your phone.

Ignore and delete the message. Never click on a link in a message like this.

Scam. Report it as junk and ignore it.

Block contact and delete and report as junk

Here are some helpful tips for the future: Recognize and avoid social engineering schemes including phishing messages, phony support calls, and other scams - Apple Support

Head76 wrote:

Attention: Yesterday, you received an message about a iOS system device threat. You have 120 mins to correct this: be8ju68.ohusibo.biz

Thanks for reaching to the Apple Support Community!

Can you tell me, where you received the message?