phone repair screen repair

My iphone fell and the screen cracked not the glass display itself but the whole front display is kinda dettached from the rest of the phone. I wanna know if it is possible to fix this in the Apple Store and how it would approximately cost? IF it cost too much then I have an option to call *****, who help me in this. But I want to go with Apple..

Keep in mind I do not have any sort of warranty!

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