COD Points, the in-game currency used in Call of Duty® games, can be used to obtain digital content from the in-game store, including the Battle Pass. You can buy COD Points through the in-game store or through your platform store.
You can only use COD Points on the platform where you bought them. However, items bought with COD Points are shared across all platforms linked to your Activision account unless they are platform-specific exclusive items.
COD Points you earn through the Battle Pass can only be spent on the platform you are playing on when you unlock a Battle Pass Tier awarding COD Points.