Hi, If get the VNA course syllabus from your accredited body the the Question will be included at the back of the Syllabus.

To be honest I have never seen a specific theory test for the VNA. I hold certification for VNA, Pivot Steer, Multidirectional as well as Counterbalance and Reach and the theory test was pretty much the same for all.
There is now a "bank" of questions that can be used for the Theory Test, some of which are mandatory but I cannot find anything from the ABA specifically for VNA so have to wonder what questions your instructor used.
It seems there were to be discussions in 2019 about creating specific tests for different categories of lift truck but the only ones I can find are Category A (Pallet trucks etc..)
Category B and D (Counterbalance and Reach).

Will be interested to know if you found anything else?