Not every region has access to Emoji's within Windows 10.
There is a reg key entry though that can alter this.
Head in to the registry (regedit)
New > DWORD (32-bit) value.
Set the Value Name to: EnableExpressiveInputShellHotkey
Value set to 1
Then reboot the computer.
Now when you are in an active text field you can press Windows key and full stop or Windows key and Semi-colon to bring up the Emoji box.