I got a call for data science role at EY , for 3-4yrs of work experience….. what pay range I should ask from them???? Plz tell me range

If EY GDS then
15LPA to 25LPA fixed

And as you are 3+YoE, you will be hired in Senior rank (42) not Staff rank (44) Therefore you will be allotted at least additional 10% bonus Which will be higher upto 30% depending on your future ratings.