I'm not seeing any confirmation within the noted source of this Scripts existence. It is however acknowledged as being such within the Eberron Player's Guide on Page 14. I could, however, have simply overlooked the supposed section within the Forgotten Realms Guide. MadHatter-Himself (talk) 23:16, January 9, 2018 (UTC)

It's listed in the "Languages of Faerûn" table at the top-right of page 156 in the Forgotten Realms Player's Guide. —Moviesign (talk) 00:17, January 10, 2018 (UTC)