America Rising 2 - Legacy of the Enclave has an in-game utility to show that version is currently installed as of Version 1.1.0.
The installed version is shown at the top of the America Rising 2 Developer Menu, which can be accessed by following the instructions listed here: Opening the America Rising 2 Developer Menu
PC users can view what version is installed even if they are using a version of the mod older than 1.1.0 by using the console. To see what version is installed:
The number that shows up after pressing Enter is the internal version number