Nothing needs to be done to execute Burp Suite in Kali Linux for the first time. The free version is an integrated tool, and it is already installed. Alternatively, if you choose to use the professional version, a license can be purchased at https://pro.portswigger.net/buy/.

The license is relatively inexpensive and well worth the additional features. However, the free version is still highly useful and provides most of the core functionality at no cost to the user.