First, set up your AOVs like this:

Then run noice like this:

set IMAGES="C:\Users\Stephen Blair\Documents\3ds Max 2020\renderoutput\denoiseme"

set ARNOLD_BIN=S:\solidangle\arnold\Arnold-6.0.2.0-windows\bin

%ARNOLD_BIN%\noice ^
-ef 2 -sr 2 -pr 2 -v 0.5 ^
-i %IMAGES%/AOVs0003.exr ^
-i %IMAGES%/variance0003.exr ^
-l diffuse ^
-l specular ^
-o %IMAGES%/denoised_AOVs0003.exr 

The AOVs and variance AOVs are in separate EXRs
That’s necessary to be able to have different filters for the same AOV in MAXtoA

Tip: In the Windows command prompt, you can use ^ (Shift + 6) character to indicate line continuation, and break long commands into multiple lines. You can also use ^ in in a batch file.