I'm guessing you are referring to Norton Security Online which is free with your Xfinity subscripton - info here:
Or if you require a retail product:
Search on line. A year of Norton for 1 PC can be had for $20. Xfinity calls $104/year a deal? Not so much.
I deleted Norton from 3 computers tonight. I'm going with Windows Defender, which has gotten much better over the past few years--and is free. Norton's $104/year after the first year is unacceptable, and I won't to pay for features I don't need. I already got a popup screen from Norton trying to get me back as a customer. No way.