Or search for steam_emu.ini in game folder and read the SavePath= line.
Goldberg is a highly popular Steam emulator used in modern ElAmigos repacks. elamigos save location
Boot up your game and trigger an in-game save action (like changing a graphic setting or resting at a checkpoint). Or search for steam_emu
If you are in a hurry, check these three default directories first. Most ElAmigos releases route save data here: elamigos save location