Unfortunately, a replacement television screen is not a "part" in the usually understood sense of the word.
What you could possibly do is dismantle the television and see if any identifying numbers are printed on the screen. Most likely you would find that it was specified and ordered as an exact custom part for that television and that there are no alternative sources of supply. If the television is more than a few years old there may not even be any replacements in existence any more.
The nature of consumer goods these days is if a major part fails or gets broken, you have to recycle the item and buy a new one. It is neither expected nor economical to repair things today. They are designed and manufactured down to such a low price point that attempting a major repair does not make sense.