[Solved]-Gauge central value don't show-Highcharts

One way is, you can format your datalabels and return nothing in the formatter () function.

 dataLabels: {
     formatter: function () {
     var kmh = this.y,
     mph = Math.round(kmh * 0.621);                
     }
 }

Fiddled version. (tweaked from Highchart demo sample )

Hope this is you need.

Another option is

dataLabels: false

Documentaion: Gauge DataLabels enabled