I have PS (Photoshop) CS4 (which I think is 32 bit) on my Windows 7 32 bit computer. I plan on moving up to Windows 10. Will PS CS4 wotk on Windows 10? If not, will I be able to use my actions with a new version of PS? Also, is there a version of PS that I can purchase that's not a subscription?
There are no other versions of Photoshop you can buy without a subscription, unless you want to go the route of Photoshop Elements.
Do not buy any Photoshop except PSE - there are many scams out there and there is no guarantee of the validity of the license.
That being said - PS CS4 will defintely show some issues when you run on Win 10. You will need to reinstall the app after upgrading as resource file locations move with the upgrade. You will need your install disk or access to the installer from your account on Adobe.com
If you don't have either of these, you may be out of luck altogether. Adobe officially stopped supporting CS5 and back even with Activation issues.
Adobe Community Professional/Adobe Certified Instructor