It mostly depends on school to school but generally the class 11th and 12th fee in science ranges from 25000-40000  per anum. 

Hi Vaibhav,
The fee structure varies from school to school so there is no generalised answer. Also, the fee structure of science is similar to commerce and arts, in most schools. To know the fee structure of a particular school, visit their website or call the school office or reception.
Hope this helps.