What is the ruling on financial assistance obtained by someone who was forced to cheat on an exam, when their diligence was predominant in achieving the result?

It is not clear what is meant by "forced cheating." If the student heard the answer unintentionally and then wrote it down, there is no sin in that, because he did not intentionally commit wrongdoing or transgression. As long as the majority of the grades the student obtained were rightfully earned, he may benefit from the scholarship offered, and it will not be forbidden for him.