Can I export all the forms into a new excel document?

Yes, you can export your form submissions into Excel format and download it.

From My Forms page, choice a form and then click submissions from the toolbar, and then you will see "Download as Excel" option in the grid.

For more help please read:

https://www.jotform.com/help/44-How-to-Export-Form-Data-to-Excel 

Let us know if you have any questions regarding the same