The Surveys module is part of the Setup panel, because you create a 'bank' of questions for your entire event here.
Building individual surveys, sending them out, and managing results usually all happens in the Communications panel.
Once you've built a survey, you can also add a Session Survey to various sessions, in the Presentations module (Setup Panel); or add a Meeting Hub survey to your Attendee App / OnAIr portal (Online Panel).
Please search this site for complete guides and information on various Survey question types and how to use them.