Put this into shell:startup folder (usually %AppData%\Microsoft\Windows\Start Menu\Programs\Startup\config.xlaunch
);
<?xml version="1.0" encoding="UTF-8"?>
<XLaunch WindowMode="MultiWindow" ClientMode="NoClient" LocalClient="False" Display="-1" LocalProgram="xcalc" RemoteProgram="xterm" RemotePassword="" PrivateKey="" RemoteHost="" RemoteUser="" XDMCPHost="" XDMCPBroadcast="False" XDMCPIndirect="False" Clipboard="True" ClipboardPrimary="True" ExtraParams="-screen 0 1920x1080@1" Wgl="True" DisableAC="True" XDMCPTerminate="False"/>
- reference superuser.com/questions/1372854/do-i-launch-the-app-xlaunch-for-every-login-to-use-gui-in-ubuntu-wsl-in-windows