We want you to pass, we want you to succeed. The good news is there is no failing, just feedback and room for growth. As long as you submit your final exam video, you will be marked and given feedback by your instructor.
If for some reason they feel you need more practice, then you can resubmit as many times as you need. But trust us, after going through all of the course material you will be fully prepared and confident to submit your final exam.