Start by downloading the app package.
Navigate to your SharePoint app catalog.
Select Apps for SharePoint:
Upload the .sppkg file to the App library. You may optionally tick "Make this solution available to all sites in the tenant". Click Deploy.
The solution will be deployed to your tenancy:
Now that you've uploaded the app package, you can install it to a SharePoint site.
Navigate to your site and click on Site Contents. Select New > App:
Select the 365Automate app to install.
Edit a Modern Page by opening it and clicking Edit:
Hover over the section you've like to add the web part to, and click the Add a new web part... button:
Select the ListBurst chart button.
You can now proceed to configure your first chart.