Video Summary:
-create a new unity project
-import avatar package
-import vrchat sdk package
-import the "vrm" package
-Go to the "VRC sdk" option in the top menu and choose "show control panel"
-log in with your vrchat account
-go to the build tab
-go to "build and publish for windows"
-fill in the information and upload
Links:
unity: https://unity3d.com/pt/get-unity/download/archive
vrc sdk: https://vrchat.com/home/download