I loved Fallout 4, and I still play it. I’ve got it installed on this computer, but I don’t have Skyrim installed. I’m not as attached to the London mod for it, TBH.
Can’t say a lot about what Bethesda is going to do with the next Elder Scrolls games, but I’d love to see a return to the more complicated skill trees and level advancement that they used in Morrowind and Daggerfall. I also really loved the limitless number of randomly generate dungeons in Daggerfall, and how it took years (in real-time) to walk across the continent, but that’s probably not what most people want now.
There’s no classes of licenses like that in the US. If you are 18 and meet the minimal legal requirements, you can buy a long gun of any type in most states. (Some states are trying to move that age to 21.) That means a single shot, break action, lever action, bolt action, pump, or yes, semi-automatic. Once you hit 21, you can buy handguns. Again: that includes break action, revolvers, and normal semi-automatics.
The only real restriction in all of this is machine guns; to get those, you need to come up with the $20,000+ that a legal one will cost, and file a transfer application with the BATF, pay a $250 fee, and wait to see if your application is approved or denied. There are some states that prevent individual ownership of machine guns entirely.