1.Every anti virus have it's own account login web site.
2.You may login in that Mcafee account by using your user name and password
3.If you do not know the password,choose forgot password and it will ask for email id then enter your email id and click "ok" or "send code or "send link
4.Then check your email and id and you will get a password reset link there, click that and reset the password and now login in your mcafee account
5.And you may able to see the "Download" option for to download it
Please refer the below link for to login in the Mcafee account