Photoshop for the papers, PortraitAI after a DAZ studio-made portrait for the characters (then Roll Advantage for token transformation), and Dungeondraft or Inkarnate for the maps. It makes me realize that I used a lot of softwares to end up with that result.
The VTT files for the Inn can be directly imported into Roll20 or Foundry with the right widget, it will import the walls and windows and doors. (Never trier with Roll20 though, I use Foundry VTT)