You need to activate the smart campaign and make sure that the qualification rules (how many times a given lead can go through the smart campaign) are set correctly.
But may be what you need is a smart list, that will give you the list of all the people who filled out the form?
Last but not least, you probably need to take some training as well, so that the basics of smart campaign design are well understood. Some of the online training will cover these objects.
I'm going to echo what Greg said - I think you need a smart list. It sounds like you were trying to use the smart list tab of a smart campaign. You can create a smart list asset on its own by creating a new local asset. In the smart list tab, you would use the filters you mentioned above. You would then look at the "people" tab to find how many people filled out your form. Hopefully that helps!