JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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.
If I understand you correctly, you are referring to an form's expiration date. This is usually used in a Registration Form that has a deadline. Please refer to this guide on how to set limits on the form: How-to-Limit-Submissions-in-a-Form
Just scroll down and you'll see the guide about setting limits based on the Date.
Hope that helps. Thank you.