Can I fail my driver's three times in Pennsylvania?

You have at most three times to attempt the driving test and pass it. You have to wait between one to seven days depending on local laws, between each attempt if you fail. If you fail three times, you have to apply for an extension of your learners permit and attempt it again when you get the chance.

Yes you can. You have 3 attempts to pass each time to get your permit. Each time you fail three times, you have to get an extension to your permit. Depending on jurisdiction and your age too, if you are under 18 you will have to wait up to 7 days between each attempt, and if you are over 18 you will have to wait at least one day to retake it.

You can fail more than three times until you get it right. Not everyone gets their driving license on the first try, so do not beat yourself down is you are one of them. It is important to take note of where things went wrong so you can improve on that on your next try.

Yeah you can. It is not advised you do, but you can, license extensions exist for that reason. The reason can be nervousness, inexperience at a specific maneuver or a simple accident that was or was not your fault, the DMV will take it into account during the tests and you can apply for extensions. You can apply for extensions a maximum of three times, which means a total of 9 attempts, before you have to get a completely new permit, in some jurisdictions.