My confirmation passes a URL plus some parameters:
…&score={quiz_score}&digestive-issues={quiz_score:10}…
Which outputs the label for the question (id=10) rather than the score (the numeric value).
I’ve tried using both {score:10} and {quiz_score:10} which produces the same output.
I’ve also tried adding {score:10:value} for kicks (even though it wasn’t in the documentation for quiz merge tags … but that outputs something rather garbled (digestive-issues=gquiz245a54a16)
Unfortunately, the labels for specific questions aren’t useful to me. The actual scores would be, and the documentation seems to imply that is possible.