Why is my screen black?

I recently dropped my iPhone 8, and as of right now, the screen is entirely black. However, the phone still rings when it is called (but nothing shows up on the black screen), still vibrates when plugged in, still powers on, still plays sound, and still gives feedback through the home button when it is pressed. Should I get a replacement screen? Or is it possible that more than just the screen is damaged? I am worried it may be more than just a screen issue as when I plugged it into my car, Apple Car Play didn’t work, and when I plugged it into my computer, it didn’t show up on there as a connected device. Thank you.