I’d like to count the (not archived) fixVersions per Jira project matching a certain string (eg. “.*SR.*”).
It should not matter if the fixVersion do have tickets associated or not.
I recommend using the Fix Version dimension “Project” level in report rows. That way, the number of versions will be grouped by project. You are off to a good start. To filter the versions by particular conditions, introduce the Filter() function around the descendants. Then add conditions for the version name and stats. The formula could look similar to the one below:
To group the versions by their release date on the Time dimension, use it in the report rows instead of the Fix Version dimension and alter the calculated measure: