Hi Shashank,
Thank you for the question.
I’m afraid that syncing settings across devices is not supported.
Because the app settings could depend on a platform with keymaps, plugins and themes.
If you still would like to sync without caring about that, you can copy config.cson, keymap.cson and packages directory in the user data directory via git or something.
But it might cause unknown issue, so please do it at your own risk.
And note that installed plugins may have many files in their node_modules directory.