Hey Jaime,
The report you want to use is the Landing Page Report. You can then aggregate the form fillouts per Program (manual process) on an exported spreadsheet. We have it set up that each form is it's own Program so it keeps things easier to sort.
Another report you can use is the Program Performance. If you set up the program so that they achieve success within the program is by filling out the form, then this report will tell you how many have filled out the form because they are the successes.
Neither are ideal, but I think they can be manipulated to get what you need.