I have the Remote Text Window showing clearance and instructions but there is no voice sound on my MSFS computer. I have voice sound at 100% in MSFS settings.
Well if you're running PF3 on client you won't hear it on your main PC without providing the necessary means for the sound to travel from one to another

namely a cable! When I was running networked FS pc's I used to simply connect from line out on the client to line in on the main FS pc.
Also frequencies in my CJ4 aircraft go to 3 decimals and yours are 2 decimals. So when the Ground frequency 119.47 becomes 119.475. Won’t accept 119.470..
The following is from the 'Known Issues using PF3 with MSFS' document in your PF3\Help folder
Support for 8.33 Khz COMMs
PF3 does not currently support 8.33Khz format radio frequencies. However, we do plan to to do so in our next release (3.11). At that point we will be offering the option to use either the new 8.33Khz format or the old 25Khz format. The later will obviously be favoured by those using hardware radios that do not support 8.33Khz.
However, provided you rebuild the PF3 database, which involves running MakeRwys, it won't be a problem because the later produces both radio formats and then we use the 25Khz frequencies which you can of course still tune your radio to.
I see in some of the YouTubes a window with “ACARS”. I don’t have that.
Have you turned it on in Options #2 -> Advanced Options -> View P3D/MSFS Options ?