If you're looking to just use Jobber reports, I'll typically export the active visits report in jobber and then calculate it based on active clients.
However, you'd have to do this every time you add a new client because your forecasted revenue would change.
There's an app in the marketplace called Crew Insight that I helped build. It shows forecasted rev for one off and recurring. That way you always know what your recurring revenue is at a glance. It's been nice to see how that number changes as the business grows and I have more active recurring clients.