Use plugin "Settings Sync" in order to keep vscode plugins synchronized across computers. To do so install it. Then do the github stuff. And if no settings are found, you can use the download "public settings" from link and use your gists id (last url part). Since you have allowed Settings Sync in your github, it will have no trouble fetching your private gist.
One worthwhile read is this post
All settings and preferences are under
File > Preferences some shortcuts are.
^ + ,open settings
Alt + Btoggle sidebar
^ + Psearch file
^ + Shift + Pexecute command