I rarely play games so I spent my 2 days off yesterday playing all this game but I wanted to ask if I reinstalled windows for sure one thing that the file would be lost and I had to play it all over again so I wanted to ask if there was a way to save it and I didn't have to play it all over again
(My English skills are quite bad so forgive me if i say something wrong)

when you play any Renpy game for the first time, it should create a folder named "RenPy" in your PC --> C: --> utents --> (your utent name) --> AppData --> Roaming --> RenPy, with each Renpy game you played having its own folder in it.

Folders in C: may be hidden by default, so look in the tool bar above when in C:, "View" and tell your PC to show hidden folders/files.

Copy your RenPy folder somewhere safe, like your SD card, USB, a cloud or a discord chat, then, once you are done reinstalling Windows, go get it and put it again in the Roaming folder.

I just changed PC, and i did that, my saves worked, but the gallery is gone (either use the cheat for $5 patrons or play the game again by skipping everything), gallery data was probably somewhere else and i didn't transfer it (maybe in the game saves in the actual game folder, i don't know).