What did you do before this happened?

Recover lost or missing Bookmarks https://support.mozilla.org/en-US/kb/recover-lost-or-missing-bookmarks

I tried that from previous comments and just cannot find any backups from that information. Never figured out what file I should search for the backups in and now need to go back about 2-weeks to retrieve the most current one. Wasn't doing anything, just opened up the browser and the bookmarks were empty.

If those firefox created help doesn't locate or resolve finding the missing bookmarks the chances are they are gone. Did you have a computer crash during that time? I suspect that is what happened and when this happens what results is lose of bookmarks or session or logins that happens.