There is no place to give feedback for questions we have.
On the page with the map (here https://www.familysearch.org/getinvolved/1950) on the far left there's a feedback button.
The feedback button is to report what you love about the tool/process or to report an issue with how it works. If you have specific questions about working on the project the best place to get answers is here in the community. The FAQ page is also an excellent resource and is updated to reflect added FAQs. https://www.familysearch.org/en/info/1950-us-census-project-frequently-asked-questions
Thanks so much for participating! This is really exciting!