You can create an export the data in a lot of different formats.. including excel. simply use the Export Records
Here is the reference.. http://help.filemaker.com/app/answers/detail/a_id/6167/~/exporting-data-from-filemaker-pro
I would just put a button that executes your script.
You have several other questions it appears...
If your iPad does not have signal/wifi.. you might want to look into syncing. Install an offline version on the iPad and sync it when possible. You can look at Mirrorsync and Gozync if you don't want to build it yourself.
I think I finally got there, with a bit of reading on the forum, and trial and error.