Hi Bob,
Getting the answers for a specific attendee can be done on
the event attendees end point. An attendee object will have a "questions" field that is an array of objects describing the question and answer.
You cannot, however, save or update attendee answer data via the api. It's an open feature request, but I can't speak to when or if that will be implemented.
Here's an example request and response:
curl "
https://www.eventbriteapi.com/v3/events/:id/attendees/:id/?token=YOUR-TOKEN"
>>> {...attendee-data,
questions: [{"answer": "text", "question": "question prompt text", "question_id': "123"}],
...}