Measuring CDS Cells on OM2 (and other OM series)

Help!! I have an Olympus OM 2 where the needle doesn't bounce back, despite the speeds auto-firing correctly. Reading other forums, this leads me to believe that the issue is the CDS cells (?)

It seems like they are a typical photo resistor, so should I just measure their resistance like I would any other resistor? If so what resistance value should they measure?

I expect it's covered here: https://learncamerarepair.com/product.php?product=2305&category=2&secondary=9
Without having looked it up (!!!) such cells generally measure in the 2k - 20k range or so, depending on type and illumination level.
Yes, you can measure these like an ordinary resistor with a decent multimeter. Note that the reading should be responsive to changes in light hitting the sensor.
I expect that the linked service manual covers the procedure to calibrate the meter.

I replaced the cells on a Nikon a while back .

The thread may be of interest to you.