I would like to remove metadata when I'm on export page to go to photoshop cc.
Which box to check for metadata removal?
While exporting Please select Copyright only.
From Lightroom, when you do a "edit in Photoshop", you are not doing an "export".
If you are doing an "export" out of Lightroom, then editing the JPG in Photoshop, see the metatdata section of the export controls as Akash shows.
Retrieving data ...