If your teacher created a video with only multiple choice questions, you will see your grade right away as those questions are graded automatically! You will see your 'Total Score' at the bottom of the questions box:
If your teacher has added short answer questions that are worth any points, you will need to wait to receive your 'Total Score' as your teacher needs to grade those questions first. Once you have submitted your answers, this is what you'll see BEFORE your teacher has graded your answers:
Once your teacher has completed grading, you will see your 'Total Score':