Is there any limitation on adding number of screens in flows?

Hi Tanu,

These are the present limits for visual workflow:

Maximum number of versions per flow - 50
Maximum number of executed elements at run time - 2,000
Maximum number of active flows and processes per org - 500
Maximum number of flows and processes per org - 1,000
Maximum number of flow interviews or groups of scheduled actions (from processes) that are waiting at one time - 30,000
Maximum number of flow interviews that are resumed or groups of scheduled actions that are executed per hour - 1,000
Maximum number of relative time alarms defined in flow versions or schedules based on a field value in processes - 20,000

So I think to answer your question "Maximum number of executed elements at run time - 2,000" involves all the elements.

Hope this helps you.