I phone 7virus

Scam.

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

If you are unsure of the source or provenance of a message or alert, do not respond to, or engage with, the message. Certainly do not, under any circumstances, attempt to contact anyone using the contact details that may have been provided within the message itself. If you need to verify a message from Apple, make independent contact with Apple Support.

Most scam alerts are designed to scare the unwary into giving away sensitive information - or to fool you into doing something that you shouldn’t - usually to defraud you financially.

There are no Antivirus Products available for iOS/iPadOS. Those that claim to provide AV protection are little more than “snake oil” - and should generally be avoided. Many are simply a vector to install software that will actually try to cause harm to your data, or perpetuate the scam.

Providing that your iPad has been kept up-to-date with system software updates, you should not be overly concerned for your iPad being directly compromised. Due to the system architecture of iOS/iPadOS, unless jailbroken, your iPad is not susceptible to traditional malware infection.