You can add number labels to any data series in a chart or graph.

To do this, go to the three dots at the top right of the chart and select "Configure Chart."

Find the series for which you wish to show numbers and turn the "Show Numbers" toggle on, as shown below.

You can now display numbers directly on your charts and choose where they appear. Instantly see key data without hovering—great for presentations!

Go to Configure Chart > Show Numbers to try it.

Save and Exit and the top right to save your changes.

For a general overview of dashboard, see this article Getting started with Dashboards