A great many virtues and rewards has been narrated for reciting a dua called Dua Jameelah.

Answer

The dua known as Jameelah is not authentic. The supposed virtues and rewards mentioned are fabrications. There is no origin and basis in the Sunnah for this dua. There is nothing more rewardable and beneficial than reciting the Qur'aan Majeed. Instead of devoting time for a baseless act, Tilaawat of the Qur'aan Majeed should be made.