Yes, yes I know we're already kind of there, but I mean without the current infighting and clash between finance vampires and industrial vampires and other gridlock factors. 
Fascism burns itself out fast with the constant need to purge and loot until nothing is left, so I know even 20 years of unmitigated fascism is a stretch. Still, what do you think a "they get absolutely everything they want, fire all US government employees and replace them at the low echelon with Billy Bob, the middle echelon with James Holden Bloodfeast III, and their favorite Youtubers at the top echelon" complete and total MAGA victory might look like? 
Try to hold it together and stretch your sense of disbelief that the hogs get the feed they've been squealing for, from mere reappropriated resources (the way nazis murdered and looted and redistributed to their favorite failfamilies) or even something surreal like the incel supporters actually getting government issued slaves while destroying all other safety nets entirely, if you dare. After all, Dr. Professor Lobster Esquire PhD MD says that's the price of civilization, bucko. 
Let's be generous and assume no outright nuclear war, just so there's something to actually visualize other than a more actually historically accurate version of the Fallouterino treats. 
I'm going to assume we're talking about the chuds themselves, not the people who lead them. I think firstly they're going to run into the problem that they're incredibly confused and self-contradicting politically. They'll push some confused populist reforms that will still be on the whole good for people. I think they would quickly set aside some of the more insane chud policies. Capitalists will try to get ahold of the situation but honestly? Without the liberal party coming to clean up some of the more glaring mistakes every 4-8 years chud politics aren't stable in the long run. I think we'll end up with very confused democrats before the end of a decade.