The film counter is set manually.
Also, to rewind, keep in mind that the knob on the bottom has an inner concentric push-in piece. You need to press that in to get the fork to engage the spool.
Also, with the back open, check the faster speeds to ensure the shutter isn't capping.
Here's a great site:
http://www.wrotniak.net/photo/exakta/index.html
My notes regarding the timed and slow speeds:
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A note on shutter speeds: you have the main dial (with 1/1000-1/25, B, T) and the secondary dial with black and red numbers.
-- To use 1/1000 through 1/25, B, or T, just set it on the main dial; leave the secondary dial unwound.
-- To use 1/5sec to 12sec, set B on main dial; wind and set to black number on secondary dial
-- To use fixed delay before 1/1000-1/25, set speed on main dial; wind and set any red number on secondary dial
-- To use fixed delay before 1/5-6sec, set B on main dial; wind and select a red number on secondary dial
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Enjoy your VX. I have three VX's, a VXIIa, and an Exakta500.