I’m still learning too my friend, so I understand your frustration. I’ll try to be as detailed as possible.
First, find the main project folder that holds all of the files for your project. That’s what the (Insert Project Directory Name Here) was meant to imply. You can tell this is your project folder if when you go into it, there will be folders like Binaries, Build, Config, Content, etc.
Once you navigate into your project folder, Click on the folder titled Build. Inside that folder, go into the folder called Windows. Inside this folder, there should be a file called Application. This is the corrupted file that’s making your project crash. Delete this file and your project should no longer crash when you try to click on the Windows option under the Platform section in your Project Settings.
Let me know if you figure it out!