How much income equals one Social Security Credit and how soon will the IRS inform SS of my credits?

Hello all, hope all is well.

I'm 2 Social Security credits short from filing for retirement.

So I started a business last year so I could make enough money to earn the credits.

My question is how much do I need to make to earn these 2 credits and how soon will the IRS send the data to Social Security so I can file for retirement?

Ive looked at the SS Site and its confusing as to if the income counted is net or gross and there is nothing about how soon the credits will be posted.

Thanks in advance.

Doug.