Help with Drop down Menu Pilcrow Theme

Hello:

I am new to WordPress, one word Help.
I am using Pilcrow theme not sure what version. I ws starting to create the pages and then was trying to add drop-down menus to the pages. Then it said menu deleted , “to create a custom Menu”‘. How can I restore what was originally there. I red through some of the support pages but need some clarity. I read this page https://en.support.wordpress.com/menus/#creating-a-custom-menu
but I am getting alittle confused. Any help will greatly appreciated.

I look forward to hearing back. Many thanks
my email is [email protected]