Are these sentences OK? (for person B)
Perso A. Where did you get the money?

Person B I got a loan. (from a bank)
I got a credit. (from a bank)
I borrowed money from a friend.
I borrowed money from the company where I work.

Question

Are these sentences OK? (for person B)
Perso A. Where did you get the money?

Person B   I got a loan.  (from a bank)
               I got a credit. (from a bank)
               I borrowed money from a friend.
               I borrowed money from the company where I work.

Answer

You would not say "a credit" you can just say "I got credit".

Answer

The first, third and fourth are fine. The second one is wrong. You can say "I got a line of credit" or "I got a credit card."