A complete guide for norton.com/setup

Hii Guys hope everybody is doing great! I am here to ask you the reason for the Norton.com/setup. Actually, I have been frustrated with this setup and tried my best to install this antivirus but couldn’t install it. Do anyone of you know what the reason for this antivirus is and how to install it. Guys if you know the reasons because tell me in detail. I will be grateful for your assistance. Waiting for your response!