onPosition is never called

Are you using MacOS? If so, then you have run into this GNSS simulator bug that I reported in November. Check the report to see what I do for a workaround.

No those are the results shown on the watch itself not the simulator

"ONE_SHOT" is just that.  You could get a null location/no accuracy, or an accuracy of "last known".

And your onPosition may not be called, as that really starts happening when GPS gets going.

Try changing LOCATION_ONE_SHOT to LOCATION_CONTINUOUS.

What I do if I only need a single location, is in the callback, once I get accuracy >poor, is I turn off GPS.

I also tried Continuous and it didn't work, here's my code:

    var accuracy;
    
    function initialize() {
        Position.enableLocationEvents(Position.LOCATION_CONTINUOUS, method(:onPosition));
        View.initialize();
    }
    
    function onPosition(info) {
        System.println("onPosition is called" + info);
        //posInfo = info;
        accuracy = info.accuracy; 
        WatchUi.requestUpdate();
    }
    
    function onLayout(dc as Dc) as Void {
        setLayout(Rez.Layouts.MainLayout(dc));
    }
    
    function onShow() as Void {
    }
    
    function onHide() as Void {
        
    }
    
    function onUpdate(dc as Dc) as Void {
            dc.drawText( (dc.getWidth() / 2), (dc.getHeight()/2)-80, Graphics.FONT_MEDIUM, "Accuracy: " + accuracy, Graphics.TEXT_JUSTIFY_CENTER );
    }

Are you trying in the sim or on a real devices, and on a real watch are you outside under open sky?  It can take a minute or two for GPS to get going.

In the sim, you want to play back a fit file with GPS data.

I tried it outside for over 3 minutes and I still got nothing