https://charlieintel.com/2018/10/31/call-of-duty-points-now-live-in-call-of-duty-black-ops-4/
Call of Duty Points can be used for buying Special Orders or buying tiers of current tiers in the Black Market. There's different Special Orders, which unlock different tier streams available to unlock with Call of Duty Points. Each stream costs a different amount of Points. You can also directly purchase certain amount of tiers if you want too. Each tier costs 100 Call of Duty Points — so if you want a certain tier, you can get that tier now with a direct purchase, but must unlock tiers in order. You can still grind to get each tier by just playing, as well.
Call of Duty Points can be bought in the in-game store or your platform's store with real money. It's available today on PS4.
Players can get Call of Duty Points from the in-game store, or your platform's respective store. Call of Duty Points you may have had leftover from previous Call of Duty games will be accessible and should show up in Black Ops 4 to use.