Re: how much does it cost to replace my nokia lumia 530 screen
You would most likely exceed the price of the phone if you go to get it repaired at Nokia Care. I remember replacing my Lumia 620 screen for ~ ₹5000, and recently, my 640XL screen for ~ ₹6000.
I think it better to ask at a good local store for such a repair and... you know, do some bargaining.
Else, there are more options for you buying a new phone for just about a thousand or a couple of thousand added bucks. The 530/430/435 are all available for almost the price of the repair at a Nokia store, mostly.