Last weekend I took the exam and finished in 45 minutes, half the time allowed. I got an 89.89%, but I round up to 90
We were specifically asked not to discuss the questions by Unity, to keep it fair. That said, I would advise that you spend some time getting familiar with Unity Services. I have always been a hobbyist and tinkerer and never really used the services, so I was caught a bit off guard. The Unity Evangelist said there is a free version of every services so you can try-out each of them.
I am glad I took the course that Sam and Ben provided. They did a good job and it was really nice as a guide to work through the various areas of Unity Development, although I would recommend spending extra time exploring each area on your own, especially those you don’t use regularly.
Best of luck to you all!