Anyone you share the spreadsheet with will see the data contained in the sheet. Only those with edit access in Sheets and view access to the BigQuery table have the ability to refresh the dataset.
For key permissions for the BigQuery data connector see here. As always, use share permissions to control who can view, edit or share your data.
In the coming weeks, you’ll be able to use tools like Apps Script and the macro recorder to schedule automatic updates within Sheets to the connected BigQuery data. For example, you can automatically refresh sales data in your spreadsheet so the data is fresh and ready for analysis at the beginning of the day. To learn more about how to record or run macros in Sheets, check out this G Suite Pro Tip.
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On the “What’s new in Google Workspace?” Help Center page, learn about new products and features launching in Google Workspace, including smaller changes that haven’t been announced on the Google Workspace Updates blog.