Friend bought battle pass for apex and it didn't pull money from his account.

If your friend is having an issue with billing and cannot see a problem at the link mentioned earlier then have him contact support for more assistance.
https://support.xbox.com/contact-us

It could be that it takes up to 24 hours for the amount to be taken out of their bank account. They may have to call the bank to verify the transaction.

It never pulled money from his account.

This may be a Glitch in the System to do with Xbox or Microsoft, or it could be that he has a different billing account linked to his Xbox Account. I would make sure your Friend checks what account they're linked to, to stop any serious damage.

Hello FragrantEmu,

We understand that you have an inquiry in regards to your friend completing purchases through their Microsoft account that have not appeared but they have full access to what they intended to purchase.

As already mentioned, the confirmation for purchases may take 24-48 hours to reflect that the action occurred on their account. They may also check their
Microsoft order history to confirm that the purchase went through, and in general for any further information
they seek about those purchases.

We hope that this helps, and we wish you the best!

For me its Apex Legends at the moment. It's very fun to play with friend and very rewarding. Unlike other Battle Royale games, they pretty much reward you the same amount of apex coins you brought the battle pass with after you reach the max level plus
the apex coins you've already earned by leveling up. So you can get the battle pass the next season for free if you choose and have extra coins left. You cant beat that