Could I just buy the Vault edition upgrade to have all the operators, battle pass, xp, and...

I am having the same problem right now, I just purchased the vault edition battle pass but did not get the 50 level skip and vault upgrades, only access to the normal battle pass. I got no extras.

Maybe what I did was something very dumb but I thought I can get the MW2 rewards like the zombie ghost and then the weapons in Battle royale later just by buying the vault upgrade. My question here is I need the full game to claim the upgrade or I need to wait or it was something else.

You definitely need mw3. All you bought was the vault edition upgrade which is for people who already have the standard edition of mw3 and wanted to upgrade to the vault edition.

So without owning the standard edition of mw3 the vault edition upgrade is essentially useless to you.

Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.
I'm an Independent Advisor and a Microsoft Xbox user like you.

Hope you're doing great today Jaxon

Yes, if these rewards are for Warzone 2.0 you should be able to receive them
The other rewards for the base game - campaign are going to remain blocked until you get the base game

my brother buy the cross gen edition and we share since years,i buy the vault edition upgrade and i get nothing no skins and no operator,i cant see the operators from the vault edition anymore,is it not working? i guess i will my money back but in my order history it insnt aviable yet

Being a disc owner of the game I can’t upgrade to the vault edition so I got my refund issued.

But if I buy the Blackcell battle pass on the in game menu, I can use that still right? It doesn’t say anything about digital only for that one