Dropped my phone and the screen went black

I was cleaning and well I ended up dropping my phone when I went to go pick it up the screen has weird lines over it and everything went crazy until it eventually turned black and hasn’t turned on since I know the phone itself works because I keep hearing my notifications and such but it just won’t show me the actual screen.the screen itself did not break or anything and while looking up information for a bit I think It might be that my phones lcd cable might’ve come loose and was wondering how much it would cost me to go and get that fixed