Open settings with Ctrl + ,
You'll want to append one of the profiles options below to the "list" portion of the settings.json file 
{
    "$schema": "https://aka.ms/terminal-profiles-schema",
    "defaultProfile": "{00000000-0000-0000-ba54-000000000001}",
    "profiles":
    {
        "defaults":
        {
            // Put settings here that you want to apply to all profiles
        },
        "list":
        [
            <put one of the configuration below right here>
        ]
    }
}
Uncomment correct paths for commandline and icon if you are using:
- Git for Windows in %PROGRAMFILES%
 
- Git for Windows in %USERPROFILE%
 
- If you're using scoop