not sure which email I used all I have entered have not worked
You can refer to this article: How-Do-I-Recover-My-Username-and-or-Password. You would need to navigate to Job listings> I forgot my username or password> enter the current email and submit. You would first want to verify if you are using the correct email address associated with your account and check your spam folders also to see if the recovery link was sent.
If you still don't recover your email address, I recommend you work with the PowerSchool Support team through a case and have them assist you with the recovery of your account. You can reach out to them by clicking on this link.