Just Go for it. Scored 96% on my first attempt after completing the practice questions. The practice exams were very helpful and based on the Scrum Guide V2020. The practice questions were pretty hard and sometimes tricky but they will definitely help you on the real exam. I would suggest not to look at practice questions on other websites as they are typically outdated or have wrong answers.Hiro has designed this course in the best way possible and trust me if you complete it the PSPO I will feel like a walk in the park.