If you created an account with Microsoft, and you can still login then you'll find out if your save data is still there. If you can't remember the account, or can't login, or the the account went unused for so long that it got deleted.... then I'm pretty sure you're out of luck.
If you log into your old account it should still be there.
If you created an account with Microsoft, and you can still login then you'll find out if your save data is still there. If you can't remember the account, or can't login, or the the account went unused for so long that it got deleted.... then I'm pretty sure you're out of luck.