@benparker50283 screen can't be repaired, they get replaced. Issue with that is that they are pretty tough to come by. I suggest to remove the back panel of your TV. There will be a sticker on the screen assembly which will indicate a maker and a model number. Do a search with that data and see if anything comes up. You can always consider purchasing a TV which is broken other than the LCD panel and use it to harvest the screen from that.
iFixit does not do repair and there is really no way to provide you with ay kind of estimate. It will all depend on what panel (if any) you'll find.