Hi @LRrokaj7,
The form submission fields are the same as properties so you can use these as enrollment criteria as you would any other workflow. For example, if they complete a form and the checkbox says, get it touch with me, your enrollment criteria is that property with that value selected. You can then choose whether or not to re-enroll contacts if they submit the form again. You may want to apply other filter requirements to that enrollment criteria, such as “Filled out form XYZ” just in case someone manually checks that box from the CRM interface.
Here’s more information about workflows: https://knowledge.hubspot.com/workflows/create-workflows
This is a Workflow lesson on the HubSpot Academy that would be helpful as well: https://academy.hubspot.com/lessons/understanding-workflows-in-hubspot
Josh