Multifunction Display Is Out/Not Working

It’s called a Multifunction Display or MFD.
You can do a PC search on it and will notice that it routinely fails in older Prius cars.
It’s relatively simple to swap out with a used one that works of that’s all that’s wrong, if it is not repairable.
Others here will have better suggestions to diagnose what you can try short of replacement but here’s one video that shows how it’s done

 

If it’s going out and no longer accepts touch inputs, then you probably need to replace it. Unfortunately, it’s not cheap.

 

You need to make sure you replace it using an identical part number. Remove your MFD and purchase one that has the same exact part code.

 

These folks fix them via mail order if you can’t do it locally
Prius MFD Touchscreen Repair

 

Is this post by @Cateran relevant in regards to interchange between the MFD's? Granted, there might not be functionality based on vehicle model package system.

MFD 86110-47230 Compatibility | PriusChat

This post is for the pinouts of the connectors from @ITBland: Will 86110-47230 work instead of 86110-47081 in 2005 Base Model? | Page 2 | PriusChat

I've not verified that there are the two same pinouts used for all the models in the pertinent two year ranges noted in the first link I shared, guessing based on the two categories of known US model types they may be.

 

Dropping these links here as well:
Bench Testing a Gen 2 MFD | PriusChat
testing mfd screen without car | PriusChat