I just used Google and found all of these. What the fukk are you talking about?
That's good you used Google.
Now go look at an actual piano and show me every sharp and flat note (these are going to be your black keys). Every note has a corresponding sharp or flat.
But there is no B sharp note(B-flat yes) , bc there is no note next to B. you are playing C. Which is the C-note.
Find me a single song in the key of B#