So I preordered Fallout 4 on XBox One and the Season Pass was part of the deal. How do I redeem this? I see no indication on doing so.

Are you sure it didnt come with an advertizement for the season pass? I remember there being some confusion about this with some people earlier.

Right but the package was supposed to include the Season Pass. I paid like an extra $20 when I bought it and everything.

Hey Robotoh. If you purchased from the Xbox Store, you can verify you purchased the season pass in your recent billing history. If it was at retailer, but sure to verify your purchase with the retailer to make sure they provided what you paid for.