Is my continued supplication for Allah to grant me the complete grade, which I have not yet received after the exam, considered an transgression in supplication?

Since the deadline has passed, the matter is concluded, and there is no way to rectify it, supplicating for its achievement is futile and may be considered an transgression in supplication. It is advised to be content with Allah's decree, for what Allah ordains is best for the servant, and to strive in studies in the future, achieving the best grades through effort and seeking assistance through supplication.