The AFSC Computer Programmer position requires at least a score of 71 to pass, Technical Applications Specialist (9S100) jobs require a score of 57, and Air Force Cyber Warfare (1B4X1) positions require a minimum score of 60.
Every correct question is counted as one point, which means that the highest score possible is 120. Getting a perfect score is practically impossible, and a good score on the EDPT is considered anything above the minimum requirements mentioned above.
Also, there's no penalty for wrong answers, so try to avoid leaving questions unanswered since you can gather extra points by making educated guesses even if you're running out of time.
If you fail the EDPT, you'll be able to retake it only after six months. That being said, there are specific circumstances that will allow you to retest without waiting for six months. These circumstances include outside forces or distractions that severely interrupted the testing environment.
Also, if you suffer from an illness in the days before the test, you'll be allowed to reschedule it.