I thoughtTarget VPN Is an official app of Apple cz it used your logo. I’d like to unsubscribe but app disappeared from my screen. Can you do it for me asap

You may be a victim of a Phishing Scam. If whatever you paid for wasn't an App in the App Store and you clicked on a link in an email or text and gave them your credit card information, you may not have bought anything from Apple at all. If that is your situation, you'll need to contact whoever you did buy from or have your credit card company dispute the charge.

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

Note: Unless you have jailbroken your iPhone, there are no known virus for iPhone and a VPN is simply unnecessary and a waste of money for iPhone.

No.

If you want to unsubscribe, you have to do it yourself.

How to cancel a subscription from Apple - Apple Support

Request a refund for apps or content that you bought from Apple - Apple Support