Where do I go to get the software version on my note 5

Jax49

My Note 5 says the Android version on my phone is 6.0.1 how do I tell if it's marshmallow,  nougat or other.?

tikibar1

You tell by the OS version number, i.e., 6.0.1 is Marshmallow.  This chart may help:

Android version history - Wikipedia