I preordered the book of many things and got the preorder stuff like the dice of many things but when I watched a video of the panel for the physical version of it, it said there will be a total of 66 cards instead of 22, but will that also affect the digital version like the dice of many things or do we get to change the way the dice of many things function? I’m not sure how many of us preordered the book of many things but I would appreciate some help and understanding of this as I never had a official deck of anything for dnd, just to Kem plastic playing cards.

What do you mean by "will that also affect the digital version like the dice of many things"? Are you referring to the card animation when you roll the dice? If so, that's a purely aesthetic feature and isn't actually affected by how many cards there are in the deck of many things.

I looked at a panel of the physical version and the new book of many things shows there will be 66 cards, but does that mean the dice of many things will have 66 cards too or just the 22 we have now?

The dice of many things just uses a small selection of cards for it's animation, so the number of cards in the deck doesn't affect that