As per apnaqanoon,If a husband denies his wife’s request for khula, the wife can seek the assistance of an Islamic court or a qualified scholar to help resolve the matter.
What If Man Does Not Agree To Khula As Per QANOON

As per apnaqanoon,If a husband denies his wife’s request for khula, the wife can seek the assistance of an Islamic court or a qualified scholar to help resolve the matter.