I’m currently studying for the JLPT as most of you are too I believe and one of my weak points is keigo (humble language).
I tried looking through the grammar section and it doesn’t seem to have a dedicated lesson for it.
If there is one, can somebody please link me to it?
Thank you!
If you look at N4 grammar, you’ll see some that have (Honorific) next to them. However, in this case, you’re better off looking it up on YouTube, since you’ll have everything consolidated in one place. For example:
Especially important is to memorize the verbs for each way of speaking.
HTH!
Oh wow, I just checked! I’m surprised there’s only 4 lessons on honorifc phrases. Hopefully they’ll add some more. Thank you for the videos too. 
Keigo is not so much a grammar thing. It’s rather quite straightforward substitution of just a few dozens of verbs / often used terms like 会社 for 尊敬語 and 謙譲語 counterparts - that’s all. No conjugations or any joints, you just google for any 敬語一覧 table Japanese people using for themselves and slap it into your Anki - voila, you’re a master of keigo and even your manager ask you to stop being so much stiff because you’re not a ryokan receptionist.
Maybe this is the reason why it’s not present in Bunpro.
correct me if i’m wrong but, i was under the impression bunpro in its current state is geared more towards studying for the jlpt? i’ve never taken it or looked to deeply into what is on the test but i’m thinking that these are the only things on the jlpt so bunpro doesn’t cover anything else? someone chime in