http://gothub.nowhevi57f4lxxd6db43miewcsgtovakbh6v5f52ci7csc2yjzy5rnid.onion/tonsky/FiraCode/wiki/VS-Code-Instructions
Using the visual Settings Editor To open the settings editor: from the Code menu, choose Preferences > Settings , or use keyboard shortcut Ctrl+, (Cmd+, on Mac). To enable FiraCode in the settings editor: under "Commonly Used", expand the "Text Editor" settings and then click on "Font". In the "Font Family" input box type Fira Code , replacing any content.