How much does it cost to fix a cracked or broken LCD screen?

I have a iphone 6 and i also have tmobile and the phone fell on the back and now is all cracked and pretty sure the lcd screen cracked cause the screen has like a whote tint and it has lines and the corner is green and can i know the price and the cheapest way possible thanks

Usually its a case by case basis as far as what they find. Should check with an Apple Store though