Hi @jw82610 ,
Here’s a [https://www.youtube.com/watch?v=XHnMLc2RBb4|video] that shows how to replace the display assembly.
Replacement display assemblies are available online. Just search for ''Sony Xperia Z5 Premium Display Assembly (LCD and Touch Screen)'' to get results for suppliers.
You will also need the tools and expertise to open the phone and repair it without causing more damage and therefore more expense. Something to consider perhaps if you’ve never done this before.