How to render Normal channel

[Jonas24006543i3q2]

hello everyone

I want to render an object for my portfolio

I see a lot of people changing the viewport to normal / height / AO to generate pictures like this (soldier on the right)

the problem now is that I dont understand how im able to render the viewport

I know that I can swap my viewport channel to AO / normal ... but whenever I try to render it it always renders the material not the map

any ideas?