That looks like the camera Raw settings, not Photoshop settings.
And currently available cameras only shoot up to 16 bits/channel (not 32 bit/channel HDR).
What exactly are you trying to do?
ACR can tone 32-bit images, but to save them you need to open then into Photoshop and then use Save As in PS, itself. There may be a plug-in involved in saving 32-bit images which is why another plug-in, like ACR, cannot do it, itself.
It is Camera Raw settings. To Merge photos using HDR pro, I wanted to save the raw files into a 36bit format. The drop down menu only allows up to 16bit.
I will try later this evening if I can save the file in Photoshop instead of Camera raw in a 32bit format. So far, I have only tried in Camera raw.