Is it faster to improve your personal credit score or your LLcs.

[Don Draper]

I was hoping to get some insight on improving credit scores. I was under the impression that a bank or lending institution would pull a LLCs. members personal credit if that member controlled more than 25% of the entity.  Now if there are 4 members with 25% control... are any of the members credit pulled? Once the LLc has a duns and Tx ID #, are the members individual credit still being pulled.. or just the Dunns #?

Which builds faster?