I recentally dropped my Iphone. I am still able to use the touch screen without any problems. I am wondering how much it would cost to replace the screen (if it is even possible)?

If I am am unable to afford to get it fixed do you have any adive to me? I was think of maybe just putting a plastice screen protector over the broken glass. This was none of the glass would fall out and I could use it. Do you think that would work?