Please look into vscode guidelines https://github.com/microsoft/vscode/blob/main/CONTRIBUTING.md
For issue requests to judge if it's out of scope we're using this
https://github.com/Microsoft/vscode/wiki/Issue-Grooming#out-of-scope-feature-requests
For text we use: https://m3.material.io/foundations/content-design/style-guide/ux-writing-best-practices