Cannot enable remote control for still images on Canon EOS M50

The menu tabs for still imaging and the menu tabs for video often differ from one another. Which version of the menu you see will depend on whether the camera is currently in video mode or stills mode.

None of the items in the "stills" 'Shooting Tab 1' are applicable to video, so those items don't exist in the "video" 'Shooting Tab 1' menu.

However, the last item on the 'Shooting (Red) Menu' → Tab 1 → Drive Mode is where you find the setting to enable using the wireless remote.

To use the BR-E1 remote for still images, you need to set the 'Drive Mode' to 'Self Timer: 10 sec/remote'

You also need to have already paired the BR-E1 and the camera via Bluetooth.

It's all covered on page 14 of the EOS M50 Help Guide. ¹

_{¹ Why the information in the separate EOS M50 Help Guide was not included in the EOS M50 User Guide is beyond me! It usually is included in the manual.}