JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://canvasjs.com/assets/script/canvasjs.min.js"></script>
<br/><!-- Just so that JSFiddle's Result label doesn't overlap the Chart -->
<div id="chartContainer" style="height: 360px; width: 100%;"></div>
Position of first dataPoint in chart are <br/>
Left: <span id="left"></span> <br/>
Top: <span id="top"></span>

JavaScript

var chart = new CanvasJS.Chart("chartContainer", {
  title:{
    text: "Get position(x,y) of DataPoint"
  },
  data: [{
    type: 'scatter',
    dataPoints: [
      { x: 10, y: 71 },
      { x: 20, y: 55},
      { x: 30, y: 50 },
      { x: 40, y: 65 },
      { x: 50, y: 95 },
      { x: 60, y: 68 },
      { x: 70, y: 28 },
      { x: 80, y: 34 },
      { x: 90, y: 14}
    ]
  }]
});

chart.render();

// get the position offset of chart container 
var containerOffsets = { left: document.getElementById("chartContainer").offsetLeft, top: document.getElementById("chartContainer").offsetTop }

document.getElementById("left").innerText = containerOffsets.left + chart.axisX[0].convertValueToPixel(chart.data[0].dataPoints[0].x);
document.getElementById("top").innerText = containerOffsets.top + chart.axisY[0].convertValueToPixel(chart.data[0].dataPoints[0].y);