Hi @WNakayama,
As far as I know, there aren’t any reporting options specifically for form submissions. Reports are contact-based, not submission-based. This means that you can report on values of contacts who submitted a form – but that value might not be the exact one from a form submission or it might have since changed. Also, if contacts submits a form twice, they would still only appear once in the report.
In most cases, fortunately, this doesn’t make a huge difference as contacts usually convert on a form once, not multiple times, it’s just something to keep in mind.
Your report would be filtered by contacts who submitted a specific form and Original source = Paid social. You could then display the Count of contacts by Company type and Original source drill-down 2. Let me know if you need further assistance with this.
Hope this helps!