I was just able to find it.From the web browser admin homepage, click Finances, then Billing, then scroll to the bottom where it says 'Statement of charges' then click 'view summary'On the app- tap 'Store' at the bottom, then open Settings, then Bill...

I would also like a solve for this. The only way I've found is to go to the Billing History page, open the Shopify Billing Statement for each month then click where it says "x shipping fees" for a list of each shipping charge.