how do i know if my forms are encrypted

I am trying to help my coleague encryt her files, she has chosen to encrypt her files, and downloaded the key, how does she know that her forms are no encrypted 

You can check if the form is encrypted or not by checking the option Encrypt Form Data in Form Preferences.

When you try to view the submissions of an encrypted form after you are having a fresh login to your JotForm account, it should be asking for the key to upload. If the key is not uploaded the submissions will be displayed in the encrypted form.

Please go through the guide that can help you with more information on Encrypted forms

https://www.jotform.com/help/344-What-are-Encrypted-Forms-and-how-to-use-them-as-expert

Hope this information helps!