How do I archive a form and once I do can I retrieve it if I need it again?

How do I archive a form?

You can archive a form in My Forms page, here's a guide:

In My Forms page, select the form and then click the "More" button. After that, select the "Archive Form" option.

Can I retrieve it if I need it again?

Yes, you can unarchive the form if you need to use it again. Here's how:

In My Forms page, go to the "Archive" folder. Select the form and then click the "Unarchive" button.

Hope that helps. Thank you.