If you are playing a Ren'Py port on mobile, the path is generally: /Android/data/[package.name]/files/saves/
/storage/emulated/0/Android/data/[game.package.name]/files/saves/
By default, Ren'Py uses a subdirectory named after the game (set by config.save_directory in the game's code) within these standard system folders: : %APPDATA%/RenPy/ / .
