Add my voice to what @Matti Haveri has already outlined.
There are no known Windows-like Viruses in the wild that self replicate and affect macOS, because of the underling UNIX Foundation and Permission Limitation.
Additionally, and specific to Big Sur macOS 11 and Monterey macOS 12, the Operating System resides in a Sealed and Read Only Volume that can not be opened by the User and protects against from “ Bad Actor “ Software.
The Only thing this Antivirus software is protecting is the Bank Account of the Developers and for zero return to the User aside from the problems this software creates.
AntiVirus Developers purposefully Market their product to create a “ Fear Factor “. In so doing, creating a False Need for their Product.
The The Built in Security is all that is required to protect the computer.
Any Third Party Applications that will interfere with the normal operation of the OS, is an invitation for disaster and comprising the Operating System
Certain Applications maybe available on the Apple Apps Store - this only means the Developer is prepared to pay Apple a portion on each sale. What the Application may do to the computer is up to the User to check this out before purchase
Any of the below should be removed as per Developers Instructions
This will included Norton Antivirus
Suggest the user take a moment to read some of the posting specific to Norton AV Software.
The arrive at your own conclusions
There has been sufficient advise offered, from more than one contributor, for the User ( you ) to make an informed and educated choice what the next course of action is required for this computer.
The suggestions have been put forth on a volunteer basis, in good faith and in the best interests of the computer.
