There is an issue in current Redshift versions that prevents it from finding TFD v1.0 1474 or newer. The Redshift team is working on a fix.
If you need to render using Redshift now, you can revert to TFD v1.0 1472 which you can find in the Build Archive. For Redshift to find TFD v1.0 1472 or older, it must be installed into the C4D plugins folder:
(Windows) C:\Program Files\Maxon Cinema 4D R2x\plugins
(MacOS) /Applications/Maxon Cinema 4D R2x/plugins
If this folder does not exist, you can simply create an empty folder with that name.
Also, the TFD folder must not be nested inside another one. That is, after extracting TFD, the .xdl64 (Windows) or .xlib (MacOS) files must be at
(Windows) C:\Program Files\Maxon Cinema 4D R2x\plugins\TurbulenceFD_C4D_v1-0_1465\TurbulenceFD_R2x_1465.xdl64
(MacOS) /Applications/Maxon Cinema 4D R2x/plugins/TurbulenceFD_C4D_v1-0_1465/TurbulenceFD_R2x_1465.xlib