During the question and answer portion of a Google Office Hours Hangout, one webmaster asked about interactive content and how Google evaluates the content on the page.
John Mueller said Google will evaluate the page based on the static content and not the interactive content.
Google does not crawl the site and fill out the form, or whatever other interactive element, and evaluate it that way.
Instead, Google will evaluate the page based on the static content not on the interactive content.
This discussion happens at approximately the 29:57 mark in the video.