Can I duplicate a form?

Yes, you can clone a form by following any of the guides below:

You can clone using the form URL: https://www.jotform.com/help/42-How-to-Clone-an-Existing-Form-from-a-URL 

You can clone directly forms in your account: https://www.jotform.com/help/27-How-to-clone-an-existing-form-from-your-account 

You can also clone fields from one form to another using this app: https://apps.jotform.com/app/field_manager 

I hope that helps.