What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
I'm not sure what you meant, if you mean to have continuous number of each submission on your form, you can use our Unique widget: http://widgets.jotform.com/widget/autoincrement
And here is the guide on how to use Unique widget:
If you have any further question or you had something else in mind please let me know.