Welcome to our forum and thanks for contacting us with your question!
If it is not an issue of using the Highcharts in the SharePoint itself, which unfortunately our support does not cover, the demo in React that I am sending below can help you. It shows the continental map generated using our Highcharts React wrapper.
Demo: https://codesandbox.io/s/highcharts-con ... =/demo.jsx
I hope you will find it useful and if I may clarify any matters I'm available at your convenience.