What is a positive question record?
Some of the badges need positive question record what is it? And how can I earn it?
It is determined based on how many, or rather how few, of your questions get closed, deleted, and have negative score. You do not need to do anything in particular, it's a side-effect.
Specifically, as I explained some time ago:
[T]he criterion for having a positive question record is:
$$Q_T \ge 2(Q_N + Q_C + Q_D)$$
where $Q_T$ is the total number of questions ever asked (i.e., including deleted ones), $Q_N$ is the number of questions with negative score, $Q_C$ is the number of questions closed, and $Q_D$ is the number of deleted questions. (Side-note: to be precise, questions closed and/or deleted only after 60 or more days do not count as closed or deleted here.)
Also note that a question that is negatively scored and closed and deleted will actually count towards all three on the right, so that you need five 'good' questions to balance this one.