How too get rid of virus

Unless you've jailbroken your phone, you can't have a virus.

Tell us exactly what you've seen which leads you to believe you have one. If you've received a message saying you have one, it's pretty much guaranteed to be what is called a Phishing Scam message, encouraging you to buy software or a service to get rid of viruses on your phone, which you can't have. Don't fall for such scams.

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

If you see calendar entries which suggest you're infected, there is a section in the link I provided, which tells you how to get rid of the rogue calendars.

I have internet pop ups on may Mac air book. I can be on the internet and bing web pages will continue to pop up consecutively and close down what ever Im doing.