How is a screen replacement for this tv

It's been our experience that LCD and OLED replacement on large screen televisions is never cost effective. First of all, replacement screens are very rarely available, and when they are the price is almost always more than it would cost to just go out and buy a used TV of the same model, sometimes even higher than the cost of a new one!

At this point your best bet would be to sell the internal components for parts to recoup a small amount of the cost. The circuit boards are often in demand as replacement parts.