You could try this one :
SONY Alpha shutter count tool
EDIT: just checked with some A7Rii files I had on my computer (from loaning the camera a day from a friend) and that model doesn't seem to be supported
it just spins the wheel and when finished just returns to the input screen, while with my normal A6000 files it goes to the next screen and reports the shutter count.
EDIT2: Just checked the freeware program PIE from Picmeta systems:
PIE Studio - EXIF IPTC & Print Software | Picmeta Systems, that one shows (among a zillion other things) the image count of the camera, also for A7Rii files. I also checked, the tool takes into account the additional shutter actuations when for instance using sweep panorama or Multi-Frame-Noise-Reduction.