Forms that display in Collected Forms are based on the forms on your website. This means that each unique form on your website should appear as a unique form in Collected Forms.
The Collected Forms tool identifies forms based on the CSS selector of the form. This means that, if your form has a CSS ID of 'gform_7', this will appear in Collected Forms as '#gform_7'. Once a form is created, you can rename the form to something more understandable to you and your team.
For HubSpot Marketing Free and Starter users, Collected Forms will show your forms in the sidebar of Contacts (under Website forms), as soon as it has captured the first submission on that form. If you have a Gravity Form on your website, for example, this form will not appear on your website until HubSpot's Collected Forms tool has picked up a submission on the form. Once one submission has taken place, then the form will exist in the Contacts sidebar where you can configure options like a connection to an email provider or rename the form.