How do I do this pack transfer on nintendo switch

You wont be able to transfer packs between Java Edition and Bedrock Edition ( Windows 10, Xbox One, Mobile, Nintendo Switch) as they use different coding to make the game.

Hi LiLBudman05,

If there is a web browser you could, you would need to do it using this address https://account.microsoft.com/billing/redeem

If you mean something else, please can you clarify so we can be more specific with our advice

Do you mean, use a digital code on a Xbox account? You can access https://account.microsoft.com/billing/redeem to use your code.

This is a forum for Microsoft not Nintendo. Please refer all Nintendo questions to their forums.

No you cannot use Nintendo id with xbox and vice versa.