Do I earn XP for Qualifiers, Tutorials and Practice Tasks?

As a general rule, you'll only earn XP if you also earn a payout. Just like the task list will show you how much money you receive for doing a task, you'll also see how many XP you'll receive.

In addition, you only will earn XP the first time you take a Qualifier. If you retake it, you won't earn additional XP.