I did mine a few weeks ago. My average in the Mark Shepherd book was about 32 and on Arbitio was 25. I found the actual thing much easier than Arbitio and only a little bit harder than the Mark Shepherd, so hoping for around 30. The average score on Arbitio is 18.3 but the average score that someone who uses it gets is 27, which is a really good score, so I wouldnβt worry. I would suggest focusing on going through your answers slowly, reading and understanding the explanations and identifying and working on types of questions you consistently get wrong.