If you had conducted a survey event for participants, the event's report tab provides access to various reports.
This report provides details of how many participants selected a particular choice for any question in the survey. You can also download it in PDF and CSV format.
Question Responses (CSV download)
This report allows you to download all the responses including comments and response to essay type questions.
Overall survey report
To view the report for survey which goes across all events and course sessions, just go to the Test -> View Tests and for search for a surevy. Click on the two links provided in the Statistics column.
This listing shows all the attempts for the survey. You can click on any link to open the details and look at how specific questions were answered. Or click on Download to download the CSV file with all responses.