Can I have the Same Forum on multiple websites?
If I have multiple websites but would like to have the same Forums integrated into multiple websites, is that possible?
So that multiple websites are sharing the same Forum Community.
In case if you have a multisite, the forum will be the same in all of your subsites.
If not we may suggest you to create a menu(in your second website), by using the "Custom Links", then copy the forum full URL and put it in the "URL" section, then click on "Add to Menu" to add it as a menu.
More info about menu's you can find here: https://wpforo.com/docs/root/getting-started/forum-menu/