Yes, It is possible. But you have to hire a developer for that.
Praveen is correct, you’d need to code a solution (or hire a developer). There is no setting to add fields to the leaderboard. And because WP Pro Quiz doesn’t use templates or have action hooks, it might be necessary to hack the WP Pro Quiz to get that data to display. But you can hack it because it seems unlikely WP Pro Quiz will ever be updated again.
Yes, Exactly the plugin author is not replying from a very long time. Before hiring a developer I mailed him regarding my needs. But didn’t get any reply from his side. But he wrote a really nice and useful plugin as I am using it since 2013 without any problem.
