I would ask a question to a government lawyer about a fee be paid for a change of ownership of inheritance?

i would like to seek the best possible legal advice to a government lawyer about the change of ownership of inheritance of my wife’s father’s inheritance entrusted to me a person rank as a barrister in nigeria told me that he went to the federal high court in nigeria that have to pay the barrister a certain amount of money in dollars for $ 3,750.00 for the certificate of change of ownership of my wife’s father’s inheritance because her father already past away. Is it legal to pay $3,750.00 the barrister that the federal high court in nigeria for a fee to the certificate of change of ownership of my wife’s father’s inheritance.