Hi @Bobby Nunez
Try searching for ''RCA (insert model number) screen'' to hopefully find a replacement screen.
Alternatively, disconnect the power to the TV and then remove the back cover and locate the screen make and model number which is usually on the back of the screen somewhere then search online using that information to hopefully locate one. TV screens are made by specialist manufacturers and not always by the maker of the TV
If you're lucky enough to find one, then don't be surprised that it can cost nearly half as much as a new TV.
If you can't find one or it is too expensive, an option to consider is to advertise the TV as ''RCA (insert model number) faulty screen - good for parts'' to try and recoup some of the cost towards a new TV. Working TV boards are always in demand.