First of all, you should choose a free or paid version of Bitdefender. From the sidebar, you should select My Devices, then click on the plus button above "Install Bitdefender products on your devices". Now, you should choose security and then select This device to install Bitdefender on the PC you are currently using.
https://threatprotections.com/kaspersky/

How to install and activate the Kaspersky Setup?

Kaspersky Anti-Virus provides comprehensive protection against various types of information security threats. Various functions and protection components are available as part of Kaspersky Anti-Virus to deliver comprehensive protection. Our advanced