At the time of writing, the number of questions in AWS Solutions Architect-Professional exam is 75 questions within 180 minutes. You could register for the certification exam by paying $300 with $40 for the practical exam.
If you wish to get AWS Certified Solutions Architect? Check out the AWS training course from Intellipaat which offers dedicated time for instructor-led course and guided projects with exercises.
Also, check out the YouTube video on AWS certification prepared by our experts to help you get started.