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 only see this form https://www.jotform.com/70511800191343 on your account and this doesn't look similar to what you have on your screenshot. Tell us the link/URL of the form you're currently working on so we can better assist you.
Nonetheless, you may reduce the spacing by changing it on the Form Builder:
Related guide (V3): How-to-Reduce-Vertical-Spacing-Between-Fields