That pie chart — the progress of a tracked goal — is only visible in the Pipeline View when filtering is see deals owned by one single user in the Pipedrive account.
As goals are set to track a user's progress in a task set by an Admin User, the pie chart can only track one user at a time, and will not appear for any other filter in Pipedrive.
For more information about goals, click here.
Note: If you are using the Insights Reporting, you will not have access to the goals feature. Goals will be released on Insights by October 2020.