Hi,

Almost all Social Login plugins work fine with wpForo Login/Registration pages, and they add Social Login button there. So, it's better to install some Social Login plugin. We cannot recommend certain plugin, you can test and share your experience here. 

Hey there, I feel to give more of a practical example. You simply need to use any social login plugin. 

I used Nextend Social Plugin. They have a really nice and detailed description regarding the setup. It turned out to work. Only issue is to make it stylistic suitable. But it will look fine!