Your school has 100% failed you. Either your school accepted you and took your tuition money, when it was obviously you did not have the skills need to be a pharmacist.....or they took your tuition money and didn't teach you anything that they should have. PLEASE, put down the name of your school here, you may not be able to do much at this point to help yourself, but you can help others by warning them about this school that took your tuition, and then left you with mounds of debt.
With very few exception (like extreme illness the day of the exam), there is no reason why any pharmacy graduate that was properly taught by a pharmacy school, shouldn't pass the NAPLEX on the first try, and with just a modicum of review. The fact that you have failed 3 times is evidence that your school has failed you.
If your situation is the first situation, where you don't have the skills required to be a pharmacist, there really isn't much you can do at this point. 🙁 Find a career that you are more skilled for.
If your situation is the second situation, then you will have to go back to the beginning and teach yourself the 4 years of knowledge that your school neglected to teach you. Get out all your old textbooks, and read them from cover to cover, working hard to absorb the material in them. Then after that, start doing review/test prep material. Do not take the exam again until you are scoring very high on the review tests, like 90% or better (not just barely passing if that.)
As others have mentioned, there is a maximum of 5 attempts on the NAPLEX. Make sure you do not take it again, until you are 100% sure you will pass.