If you can't find your Devil May Cry 5 save game at the above location and are running Windows 10 (or have it installed to a different folder than your original Steam installation), it's worth looking here as well: X:\Steam Games\steamapps\common\Devil May Cry 5\win64_save. Your Devil May Cry 5 save location on PC is found in the following folder: C:\Program Files (x86)\Steam\userdata\\601150\remote\win64_save.
Should you lose the save game, the potential investment is also lost. It's also worth keeping in mind that Devil May Cry 5's orb microtransactions are tied to your save game. Devil May Cry 5 gives you the option of saving your game to different save slots but in the wake of something unexpected happening, even that's not as effective a solution as backing up your files from the save game location on your HDD or SSD.