Welcome back 
Do you already use WordPress?
If you haven’t set it up and you don’t need WP specific-features, then I’d suggest you to use this News Plugin for Discourse:
If you want Discourse topics shown as articles on WP, there are probably several ways to do that.
You could create a WP plugin that either loads the topic list (append .json at the end of a Discourse page, such as https://meta.discourse.org/latest.json to get the data) or create duplicated posts on WP using a Discourse webhook:
There may be more practical ways to do that; I’m not an expert in this field