To export any survey report you will need to access the survey details via desktop only by navigating to menu > dashboard > surveys.
If you tap the survey name that you’d like to export, you'll be presented with various windows displaying the survey information. In the ‘Responses’ section you will see a list of the survey participants. Tap the green download icon to export the survey results.
The .csv file contains the name and email address of each user who completed at least one question in the survey along will their response to the question(s) they completed.