No. Realme X does not have the memory card slot but you should not worry about it because it comes with 128GB internal storage option, which is pretty big from a regular usage perspective. Besides, the mobile also has OTG support.
No. Realme X does not support wireless charging. It has USB Type C port for the fast charging.
No. None of the Realme models comes with earphone. Realme X standard box packaging includes Realme X mobile, USB Type C Cable, Power Adapter, SIM Ejector tool, Protective case, and a user guide.
Yes, Realme X does have face unlock support also.
Yes, Realme X does have the Dolby ATMOS support. It is enabled by default.