Hi ScareHurdle7320,
Thank you for posting in Microsoft Xbox Community. I understand that you purchase a Minecraft promotion and you want to know how to claim the free items.
If you made a qualifying online purchase from Minecraft.net, Xbox, or the Microsoft store, you’ll receive gift codes for your free items via Xbox Live Chat within 35 days of purchase. To get your codes, you need to sign in with the Microsoft account you used for the purchase and set your account permissions to allow access to online chat.
https://help.minecraft.net/hc/articles/69859713...
Here's how you could see incoming messages according to platform:
Xbox Console:
Press the Xbox button.
Press the right arrow to navigate over to the Messages tab.
Xbox App on Windows PCs:
Launch the Xbox app.
Sign in using the Microsoft account used for the qualifying purchase.
Expand the Friends list on the screen.
Click on the Chats tab to see incoming messages.
Xbox Profile Online:
Visit Xbox.com.
Sign in using the Microsoft account used for the qualifying purchase.
Click on the Xbox icon in the upper left-hand corner.
Click the Chat bubble.
Regards,
Alvaro