You certainly can, but it's not easy to do, so we don't provide our own guide.
Here's a StackExchange question that should help:
Can anybody tell me
Does nodeBB is integrate-able with WordPress as a separate community forum? Like phpBB..
Searching it for a long time but did not find a way !!
how do you want it integrated? with same users? there is a wordpress SSO plugin, also a session sharing plugin
I would like that too. But specifically add the NodeBB forum inside a wordpress page via template.
EDIT: a plugin similar to that would be a good start -> https://wordpress.org/plugins/wp-discourse/