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I dropped my phone everything works, but in one spot all it shows is the lcd, and I’m wondering if that broke on it everything works and all, but do I need a new phone

@mrdakota it sounds like a bad screen but without seeing it, it’s difficult to say for sure. Post some images of what your screen shows and post those with your question. Use this guide Adding images to an existing question for that. Use these guide Samsung Galaxy S8 Screen Replacement to work on your phone. Update (09/11/2018)

that is a broken glass and your AMOLED is still okay. Yes, eventually you do want to replace the dispaly assembly because it most likely will continue cracking and this will then cause your digitizer to stop working.