Norton don't do things like that.
It looks like a spoof to me @stephec - particularly as there's a spelling mistake in the text.
I guess it would take you to a fake (pretend) Norton website - and steal your money.
I had Norton many years ago
It came with the laptop and the rate to upgrade after the free 3 months trial was quite cheap
Then a year later it had to be renewed
funnily enough the same version was not available except as a renewal of a free version - and the cheapest version available cost about 10 times the original cost
Since then I have only used free anti-virus systems - except at work where a more professional version was needed (still got it for free after pleading poverty and deprived children and stuff - it was a Primary school so I wasn;t lying)
Turned out that the Norton was also slowing the computer down - bugger to stop the damn thing running though! Kept coming back like a needy relative!
Also virtually impossible to 'unpick' it from your computer, it has 'tentacles' everywhere.
Have found the built in Windows Defender to be perfectly adequate.
Daresay the friendly salesperson in the computer store would do their utmost to convince you otherwise.