As long as nothing goes wrong.
To update on android you have to download the APK again and install it as an update to the previous one.
If you uninstall the game, the saves will be lost.
You can back up your savegames if you go to the save's location with a file manager.
WHERE ARE SAVES LOCATED ON ANDROID? Android/data/com.domain.corruptedkingdoms/files/saves
NOTE: If you're running Android 11+ then Google has hidden your data folder. To access it you need to connect your phone to your PC with a USB cable or use an app like Solid Explorer or X-Plore to give you access to the folder again.