Gauge can not responsive help me!

General
7

Your function needs to listen for msg and and then convert msg.payload by dividing by 100.
The scope.$watch() example in the help text is what you want.
e.g.

<script>
 (function(scope) {
    const gaugeElement = document.querySelector(".gauge");
    function setGaugeValue(gauge, value) {
        if (value < 0 || value> 1) {
            return;
        }
    
        gauge.querySelector(".gauge__fill").style.transform = `rotate(${
        value / 2
        }turn)`;
        gauge.querySelector(".gauge__cover").textContent = `${Math.round(
        value * 100
        )}%`;
    }
    
        // Set initial value of the gauge to 0.3
    setGaugeValue(gaugeElement, 0.3);
    
        // Listen for incoming messages from Node-RED
        // and update the gauge value accordingly
   
    scope.$watch('msg', function(msg) {
        if (msg.payload) {
            // Do something when msg arrives
            setGaugeValue(gaugeElement, msg.payload/100);
        }
    })
})(scope);
</script>