Paydex of 75 on 12 yr LLC, Credit with no PG?

Paydex is 75 and climbing on my MMA formed as LLC in 2001. Would really like to expand and upgrade with business credit. I'm a much better fighter/trainer than businessman. Any good advice will be appreciated. Thanks

 

It seems how to best use a good a PAYDEX is a mystery and maybe a con job from D & B.