Hello Cheryl,
Here's my answer. Work orders does not sync with quickbooks, you have to create an invoice of the work order in order to sync them with quickbooks. In regards to Estimates make sure that the Wait for Sync Approval is unchecked on the Field Service Center -> Estimate -> Add/Edit Estimate Screen, this will ensure that it is going to quickbooks instantly. Moreover, if you still have issues you can also check the conflicts by going to Quickbboks tab-> Resolve Conflicts tablink. If you see any conflicts otr there is no conflicts, you can give us a support call or turn on the method user by going to Customize > Users > Method Support and and click the checkbox.
Hope this helps.
-Inder