how should i tell m feelings to my dad?

I feel sad now , my dad was screaming at me and about to beat me up, i don't think that a b+ OR a 16 out of 20 is that bad considering i have an A like 18,5 in mathematics. he even told me that he would prefer me dying over me having such grades this ear i tried commiting suicide but the moment i drank the bleach i regreted it , i feel like he wants to erase my very essence , probably why i don't have any dreams , EVEN WITH RELATIVELY great grades , i am glad that this site exists even before creating my account i am glad to be part of the yaoi and fanfic fandom. I recently realised that i like girls and that my ed and depression are gtting better i want to tell him all of that.