Why some forms show a number of entries?

4.)  Some forms in our folders show the icon of a red box with the number of entries and others that have an icon of a page.

The number in a red box indicates the number of unread entries:

You can see the responses following this guide: https://www.jotform.com/help/269-How-to-View-Form-Submissions 

If you're referring to anything else, you may provide us some images about it, this guide will help you uploading the images here: https://www.jotform.com/help/438-How-to-Post-Screenshots-to-Our-Support-Forum 

Attached images via email replies will not be posted here.