@ppc please, be respectful. Qubes is difficult and we all struggled to understand it at some point. Not knowing dom0 runs fedora is perfectly normal. Keep the "lol"s only for Memes about Qubes OS.
Technically, you CAN install deb in Fedora in most cases. Resolving dependencies and path conflicts may be tricky, though. Did it many times. “alien” is a helper tool to make an rpm from a deb package.