I want to install Emotive Xavier Control Panel on a Raspberry Pi3, running Raspbian Sretch.
A version exists for Ubuntu Linux. Can I install this on my Pi?
You will probably struggle. I couldn't easily get hold of the program to check, but by "Linux Ubuntu" it very likely means "...on an Intel/AMD processor", and it's likely that it includes binaries which will have been compiled for those processors.
If it were open-source, you could (probably) compile it yourself, but it appears it's not.