The font used for tab titles, menus, and other text that's part of VS Code itself, as opposed to content such as code within an editor, is currently Arial.
The most commonly used monospace fonts in programming include Consolas, DejaVu Sans Mono, Menlo, Source Code Pro, and Fira Code. These fonts are ... Fira Code · JetBrains Mono · Hack · Ubuntu Mono
Cascadia Code is the default coding font for Visual Studio and the Windows Terminal. This free programming font comes with an italic, cursive, and mono variant.