How to extract information from an app and put into excel spreadsheet?
Unless the app has that functionality built in there is no easy way to go about this.

Apps keep all their data stored internally, giving you no way to access it unless they include an export feature or integration with iTunes Documents or something like Dropbox. You'll have to look at the documentation for the app you're using to see if it does.

The only potential solution I can think of would be to jailbreak so you have access to the iPad's internal filesystem and hope that you can find and extract the files. You would then have to either write a script or handle the conversion to XLS/CSV manually so the data can be used by Excel.