Is the bachelor's degree obtained by the questioner considered illegitimate, must he leave the university, and is the certificate he received from the accounting course unlawful, due to his fictitious attendance registration on days of his absence during the vocational training period?

It is not permissible for someone who was absent from a lecture or training to register themselves or others as present, as this involves lying and forgery. The money earned from this is illicit and must be returned or the person must seek absolution from it. As for the bachelor's degree and the course certificate, there is no objection to benefiting from them for study or work if the person is qualified, even if illicit money was used in the studies.