The default save file locations for Starlink: Battle for Atlas are:
C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher\savegames
Settings > Application Saved Data Management > Saved Data In System Storage > Starlink: Battle for Atlas
My Games and Apps > Starlink: Battle for Atlas > Menu > Manage Game > Saved Data
System Settings > Data Management > Save Data/Screenshots
To manage your saved games, please take a look at our Managing Save Files article.
If you have any other questions, please get in touch.