Help planning my degree

[booklovingirl]

Hi Everyone, 

So glad to find this site. Hope you're able to help me too. 

I want to finally get my degree. I've been working in finance/accounting for almost 30 years. Started doing bookkeeping right out of high school (graduated at 16), I have been the financial manager for a non-profit in Los Angeles for the last 15 years, managing funds, grants, audits, etc.  I do non profit tax returns as well. But I never got a degree -- in fact I have no formal credits even towards it. 

The thing that's most important to me is speed. I'd like to get a degree as fast as possible -- but a relevant one, i.e. accounting or business, not just general studies. 

Below is my basic data, I would appreciate any advice on this. 

Thanks in advance!

Your Location: California, United States. 
Your Age: 46.
What kind of degree do you want?: Business/accounting/finance.
Current Regional Accredited Credits: None

Any certifications or military experience? I am mid a Google Data Analysis certification on Coursera but not done yet. 
I could probably take and pass the Microsoft Excel Expert exam but haven't done that yet.