What report allows you to see how successful or active a form has been on your site?

There are a number of unassigned prospects in the Lenoxsoft database that have NOT been active in more than
60 days. An automation rule is set to assign prospects once they reach a score of 100.
What automatic workflow can be created to prevent them from getting assigned?

An Administrator wants to make a list of all prospects who complete the Contact Us form but only wants them to be added the first time they complete the form. If a prospect is ever removed from the list, they shouldn't be able to get added back to it.
What is a recommended way to create this type of list?

Completion Actions are retroactive.

On Tuesday, a marketing user scheduled a list email to be sent this Friday, but their manager wants the email to go out tomorrow Instead. What Is the recommended way to change the scheduled sand data for the email.