Squeryl has two different ways it works with GBP data. Both of which require at least one location being added to a channel to function.
The ad-hoc insight reporting can be summoned with @squeryl tools gmb-insights and will bring up a data selection pane:
After selecting the timeframe or custom date range, hit Confirm and fire off the request. Data will be returned within 3-5 minutes depending on the number of locations and the date range provided.
To setup regular weekly reporting for a channel, simply type /reporting and select the GBP insights option. After confirming, the data will be returned every week for the previous week’s data automatically and will notify when it’s available with a @you mention.