driver for HP Photosmart all in one

HWTech is right your mac should download the drivers for you but if you want to visit

the HP Support page for your printer then click on the link below.

https://support.hp.com/us-en/drivers/selfservice/hp-photosmart-7520-e-all-in-one-printer-series/5199461/model/5199462

Make sure the operating system selector is set for macOS Catalina 10.15

there you will see a download for the HP Easy Start app, which once you download

and then run will download any drivers necessary.

You should not need to download any drivers since macOS should automatically do this for you if necessary. Here is an Apple article with instructions on how to install & setup a printer:

https://support.apple.com/guide/mac-help/add-a-printer-mh14004/mac