This can only be done on NEW McAffee Accounts, so use a temp mail service or something to do this!
1 - Go to this link: https://cart.mcafee.com/?&offerid=403203
2 - Enter the email you Used to create account and enter password and confirm it
3 - Click “Accept and Continue” and then, click on “Place My Order”
4 - At the next screen you get, click the red “Get my Trial” button and then click “DOWNLOAD”, you don’t need to download it to redeem your license key
5 - At the next screen, you should recieve your license key
6- Download and install the software and activate it using the key you got.
The process is quite simple and can be easily abused. You can even sell the keys if you Wants.
there is already a post like this bt this one is a bit elaborate thats it