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.
Do you mean you are trying to connect your form to mailchimp and are unable to find the mailchimp api key to add to the integration?
I have tested the mailchimp integration and it is working properly on my end.
Which form are you having this issue on?
Please see https://www.jotform.com/help/163-How-to-Integrate-with-MailChimp to learn how to properly use and integrate your form with mailchimp.
If you need more help please explain to us more about the issue you are having so that we can assist you better.