If anything they may need to just push the playoffs back. You might need wiggle room at the end of the year fof makeuo games. That's about all.
I think this is probably what we'll see happen. I think maybe teams that have to make up a game will have a week 18 and all other teams that have clinched playoff spots with get an unexpected bye week.
As for the Super Bowl, given the unique circumstances of this season, it wouldn't surprise me to see the game pushed to the right and if for some off reason Raymond James Stadium isn't available at a later date, I think they could easily pivot to another location. Especially since they likely won't have to deal with as many logistical issues due to the lack of fans and the reduced number of media.