Is it permissible to swear falsely upon the Qur'an to avert harm to one's wealth and job, with the intention of repenting?

What you did in enjoining good and forbidding evil, and their forcing you to swear an oath, is an injustice. Therefore, it is permissible to repel it from yourself. If dissimulation (Tawriya) is possible, then do it. Otherwise, it is permissible to swear a false oath to escape injustice.