To generate a report of all your vendor sales, per currency click on Reports & Metrics in your lefthand toolbar. Then select the Sales report and choose your Start date and End date. Under that select which seasons you would like included in your report (in the case that you have more then one). Then choose whether you would like the report to list vendor sales by Currenices or by Day totals.
To see the report inline to your web browser click the green View button to the bottom right.
An example of an in-browser report can be seen below.
Then, to download for Excel, Google Sheets or other external spreadsheet application click the green download icon button to the bottom right and open in your spreadsheet of choice.