Hi @mjim66215 ,
Not quite sure if it is entirely suitable but here's a link to a [https://www.youtube.com/watch?v=oMY5pPais8I|video] that shows how to replace the display in a Coolpix P500. Hopefully it is a close enough model to be of some help. It's in German but the video is self explanatory.
Here's a link to just one [https://www.ebay.com/itm/NEW-LCD-Display-Screen-for-Nikon-Coolpix-P600-Digital-Camera-Repair-Part-/331703989652|supplier] of the replacement part. It's not a recommendation to use them. It's shown to give an idea of thhe cost of the part.There may be other suppliers online that suit you better. Just search for ''Coolpix P600 LCD screen part'' for results