Information about an equivalent nursing exam ?
I already have an A.A.S in Business Administration

I am not sure I understand what you mean. Do you mean since you already have your AAS in BA can you take the AAS nursing exam? If so, no you can't

You must graduate from an accredited school of nursing to be eligible to sit for the nursing board exam (NCLEX)

There is no equivalent nursing exam. You might have seen those online nursing degree offers but do not fall for it. J_9 is right on the money - you need to attend an accreditated nursing program and graduate successsfuly and pass the NCLEX. There is not a shortcut, thankfully.