Are you talking about showing the gain reduction of the compressor on the track channel? If that’s what you mean, no there’s no way to do that. That said, the RESULTING compressed signal IS shown on the channel meter, because the meter is monitoring the signal after the channel inserts (assuming the meter is set to a “post” configuration that is). If using the Cubase compressor, the plug-in itself shows you the gain reduction.
That having been said though, if you were looking for a compressor that shows EVERYthing from the input signal, to the output signal, to the gain reduction, the Fabfilter Pro-C is such a compressor. It has a visual interface that relates all three of those aspects together, and it’s very very clear what the compressor is doing at any given time–almost too clear, as it encourages you to watch it rather than listen. It’s a fabulous, well featured and powerful compressor. BUT it is on the pricy side–and again, you would still have to have the plug-in open to see the gain reduction metering resulting from the compression.