Contact HP about your particular MFP scanner support issue. We are fellow users and have no idea which, or when HP will provide Catalina compatible scan support for your anonymous device model.
You may try Apple's Preview and Image Capture utilities with your scanner, and if you are short on patience with HP, you might consider checking if the paid, non-subscription, 64-bit VueScan supports your scanner model without need for any HP software or drivers.
I have owned VueScan Professional since 2010 and have never paid for a software upgrade. The VueScan vendor does not compensate, or otherwise provide any benefit to me for suggesting their product.