Hi
You are correct. When you Save Project File or Save Project File As you are creating a .vpj file......a text file that enables VP to rebuild your project from the clips etc on your PC. You need to Export instead.
Click the Export tab on the top toolbar and you will see the You Tube** option. Select this and complete the details including your Google account data and you project should upload. Alternatively export your project to your PC using the Video File option and export the video you create to You Tube direct
Nat