I’m pretty sure your singleplayer game and settings are saved to the cloud. I’m not 100% sure though, so it may be a good idea to check with xbox customer support before you delete it.
I think you can also delete the game without deleting your save on the console. When you go into the manage page to uninstall, I think you have both options. I’m not at home right now so I can’t check.
I reinstalled CE once and didn’t loose my singleplayer save, but that was a few months ago and I don’t really remember the whole process.
Also, do NOT check the settings from the main menu afterwards because that will reset them back to default.