I am able to upload documents into the actual form?

I am able to upload documents into the actual form? I am creating test and what participants to be able to review the material (open and download to their devices) prior to taking test.

If it's a PDF document, you can do so by using the PDF Embedder widget as it allows you to upload and embed PDF documents directly in your form.

Here's a guide on how-to-display-a-pdf-document-on-your-form.

But if it's a different file type, you can upload the document first to your own hosting server, grab the public/shared URL, then add it to the form using the PARAGRAPH field creating a hyperlink. Here's a quick video guide: https://drive.google.com/file/d/1g_2_qo4D_NP_CUujA6uozZLFaFEt8s6M/view