These are the save file locations by platform:
PC
C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher\savegames\USER ID\13504
PlayStation 4
Settings > Application Saved Data Management > Saved Data in System Storage > Assassin's Creed Valhalla
PlayStation 5
Settings > Storage > [Storage Device] > Saved Data > PS4 Games / PS5 Games > Assassin's Creed Valhalla
Xbox One
My Games and Apps > Assassin's Creed Valhalla > Menu > Manage Game > Saved Data
Xbox Series X|S
My Games and Apps > Assassin's Creed Valhalla > Menu > Manage game and add-ons > Saved Data
To help us look into issues you may encounter with the game, we may ask you to submit specific save files.
Let us know if you have any questions!
Let us know if you have any questions!