Hello marymoody,
Let me share a few details about vendor credit card payment that you may consider.
QuickBooks Online doesn't record any vendor credit card payments on the Bank Deposit screen. This is because vendor credit card payments are expenses or money out transactions. Thus, they won't appear on the Bank Deposit page which is for income or money in transactions.
If in any case, you're referring to a vendor credit (or refund), you can see its amount on the vendor's Bill Payment page, specifically at the bottom part labeled "Credits".
Feel free to read this article for your reference: How
to Record Credit Card Payments.
If you have any other concerns, feel free to leave a comment below. Have a great day.