What is the black round thing under the idle screw and why is it leaking gas if I replace it then will it stop leaking?

it is leaking gas and will it stop leaking if I replace it?

 

That’s your fuel pump.
no answer to your leaking question. Where is it leaking, the pump or the hoses?

 

It's not leaking from the hoses it's leaking from the pump

 

Good deal. Some fuel pump models can be rebuilt.

 

Cool thanks man, I'll see if I can take it apart n put it back together, see if i still leaks, looks like n easy to install part fortunately if i have to replace it, two hoses and a plug, but idk if it could be the carb, tank/petcock , or something else making it leak so I don't want to just buy a new pump, the bike is also operating normal so