Hi Veeresh,

This depends on which University you choose to apply for. The number of seats under NRI quota for B.Sc in Forestry and the fee structure for the same differes with different universities. For example, B.Sc Forestry offered by Tamil Nadu Agricultural University, allots 5 seats under NRI quota. And the fee structure is USD 2100/ Semester. Check for other prefered universities. They would be around the same. 

All The Best.