Can my iPhone get a virus and if so how do I clean the phone

Hello ~ Take a look here and if you are seeing messages that you have a virus it is a scam…just don’t respond to any of those messages and do not divulge any of your info:

Recognize and avoid phishing messages, phony support calls

Delete spam calendars and events on iPhone - Apple Support

~Katana-San~

There are no viruses that can affect an iPhone or iPad. Not unless you've jailbroken it.