Who should I talk to about becoming a singer

The person you look at in the mirror. Do you have a voice teacher. Do you or have you studied music theory.
Do you know how to play any music instrument?

How many times a week or you now going out singing at events, open mic nights, and the such.

Have you hired a booking agent yet ?

I am getting into chorours at my school and I sing a lot at home and I honestly believe I have a good voice I just don't know how to get up in the business

i honestly believe i have a good voice

Its not what you believe, its what others can tell you. Talk to the music teacher at school ask what they think of your voice by professional standards.

You don't say how old you are, but it is not easy to break into the business. You need more than a "good voice". You need other talents like the ability to wrote your own songs. You also need a lot of practice and a lot of luck.

You start by performing wherever you can. The school chorus is a good place. You get voice training. Learn to read (and write) music. When your mentors think you are ready try talent shows or YouTube.