We support Wordfence and a few other reCaptcha as requested by customers since launch of the BuddyBoss App. 
If you use a specific one you’d like us to try and add for compatibility you should submit it to the roadmap (it’s not a bug, but rather an enhancement).

BuddyBoss App Plugin Version 1.1.7 which was released 11th May added captcha compatibility to all those which were popularly requested at the time: