How do I redeem my code?

From the Microsoft Store:
1. To claim your content, open your Windows 10 or 11 device and search for "Microsoft Store."
2. Ensure that you are signed into the Microsoft Store under the account you wish to play Minecraft Dungeons on, then select the account button in the upper right hand corner, next to the search bar.
3. A menu will open with the option to "redeem code or gift card." 4. Select that option, input the code and click next to link the content to your account.

From a Microsoft account:

Redeem the code on your Microsoft account at https://redeem.microsoft.com, click here for more information on redeeming a code on your Microsoft account.