In your Data Studio Dashboard, click the "+Create" button at the top left. Select "Data Source". 

Select "BigQuery" from the list of Google Connectors.

If this is your first time connecting Data Studio to BigQuery, click the "Authorize" button to authorize the connection. 

Select Public Datasets -- Your billing project -- covid19_jhu_case -- summary. Then click the "add" button to connect. 

Verify the data fields being imported. Change the "province_state" datat type from "text" to "Geo--Region". Click "Create Report" once you have confirmed the data types.