Battle one; Draw. Sasuke should be able to hit bee with atleast 2/3 susano arrows before full can fully create and fire tbb. 2/3 susano arrows would wound him badly, but i believe he should have enough strength to do it. Ms sasuke pretty much uses susano v3 version. The one he used against danzo and i believe a tbb would greatly damage that susano along with sasuke. Therefore both him and bee get damaged and it ends in a drawBattle one is Sasuke's non EMS
Battle 2 is EMS Sasuke
this already is enough said U_USasuke wins both scenarios. His susanoo arrows are faster than Bee and his bijuu bomb. It takes time for Bee to gather the chakra to fire the bijuu bomb as shown in his fight with Sasuke.
By them time he gathers the necessary chakra a susanoo arrow would've already pierced the hachibi's head.