Virus

Unless you jailbroke your device, an iPhone can't get any viruses.

Perhaps it is a scam attempt: DO NOT respond or click on that warning message.

See this support article:--> Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support

Regards

Giulio

Erika9209 wrote:

I’m sorry but jailbreak means...?

It means modifying the iPhone operating system.

Since you didn't, these are scams messages written by criminals to scare you.

Just delete them and move on, there's no virus on an iPhone.

You're welcome.

Stay vigilant, there are many scammers out there.

If you're in doubt, you can alway come back here and ask