Purchasing new PC

Hi all, hoping for some help.

I am intending on buying a new PC in the coming weeks and was wondering how I can transfer my existing Norton Internet Security from my current PC to the new one. My subscription was automatically renewed a couple of days ago, so I am wondering how I would be able to go about this? Would I need to cancel my current subscription then install Norton onto my new computer?

Any help would be tremendous, as I am not the most technically gifted on these matters, thank you.