Adobe photoshop is not working?

Catalina only supports 64 bit applications.

Many people reported App compatibility after they update to Catalina.

The best practise for you at present should be downgrade your os to Mojave with time machine.

You should have as the big thing about Catalina is that it does not run 32bit apps.

To check for 32bit apps use this app, https://www.stclairsoft.com/Go64/

You cannot just presume things will continue to work as they did years ago,

when a new OS is announced you really need to find out how it will affect you

and your apps and any printers/ scanners etc. Before upgrading you should consult this page and check for compatibility

of your apps in the latest OS. https://roaringapps.com/apps

Just cos it's shiny and new don't mean it's any good for you.

Revert your Mac to a previous macOS version - Apple Support

Probably the only Photoshop that works with Catalina will be their fully 64bit subscription option.

Photoshop CS6 has 32bit elements that prevent it from working in Catalina.

Did you not research this before upgrading to Catalina.

To be frank, this is the worst update ever for people who uses Photoshop and other Adobe products. My photoshop version is 64 bit but still having trouble running. It opens, loads and gets stuck on the loading open new project screen. Except FCP and iMovie nothing of 32bit works in the Catalina. Pitiful, I must say.