platform buy license domain name

hello, which platform do you use to buy domain name licenses (example: gucci-official-shop.com) ?

what's a domain name license??

If you mean sites where you can register domain names I recommend Namesilo, Porkbun, Namecheap (anything but Godaddy and Epik that is). If you mean something else, please explain!

Also, don't buy domain names that contain the word "gucci", or you risk having the domain taken from you or being sued over using trademarked words