Summary

Here is a way to use JQL to get a list of work items that use forms and have values inside them. This JQL will give you the actual work items where Forms are being used and not just Enabled.

Use "Total Forms" in JQL

One can run the below JQL to find all the work items that have either a Locked, Open, Submitted, or any kind of Form:

"Total forms" > 0

See the types of forms used on each work item

Once you run the above JQL:

1. Select the Columns icon
2. Enable all of the following columns in your search results:
   1. Locked Form
   2. Open Form
   3. Submitted Form
   4. Total Forms
3. Select DONE 

The search results page will now include details about which type of forms are attached to each work item.