is my software 32 bit

Go to Apple menu > About this Mac > System Report > Software > Applications and look in the last column on the right "64-bit (Intel)" Yes/No

32-bit app compatibility with macOS High Sierra 10.13.4 and later - Fairly complete FAQ - https://support.apple.com/HT208436

ASC post summarizing this:

https://discussions.apple.com/thread/250076499?answerId=250135608022#250135608022

32 bit application scanner application - https://www.stclairsoft.com/Go64/

The free, St. Claire Software Go64 tool will provide you with a listing of 64 or 32-bit software it has found.

If you do not want to install Go64:

Press the option key and click the  menu to choose System Information… . Scroll down on the left side of the System Information panel until you arrive at Software. Click Applications, and the rightmost column (64-bit) will display Yes/No for application status.

If it says Yes, then look for the Legacy Software (Mojave+) category and see if the same application is listed. I mention this, as by example, iPhoto v9.6.1 is shown as 64-bit, but in reality, it also appears in the Legacy Software category with two 32-bit library components that invalidate its Catalina compatiblilty.

If you've already updated to Catalina, your 32-bit apps are the ones that don't work any more.

Forget it VikingOSX, we're not spoon-feeding it enough. I actually had the audacity to make the reply in different forms requiring an entire mouse click to read the solutions.