yes CATIA V5 work on windows 10.
You have to be careful on the version you use.
My understanding is that all versions may work... but not supported by Dassault Systemes.
Thanks. I was able to install "DS CATIA P3 V5-6 R2016 GA WIN64-SSQ + SP1 + SP2" .
I have problem on it. I tried V5-6 R2016 and I could not work, after that I tried V5R21 because it was working very well on Windows 7, and I had the another problem. CATIA V5-6 R2016 every time appears a message with license problem, and R21 neither open.