Ideally, your business will operate long enough and become successful enough that the company will get its own credit score and be able to qualify for a loan on its own. Building a business credit score requires your company to establish its own identity, including having its own tax ID number or employer ID number, obtained from the IRS. You'll typically also need a business credit card in the organization's name that's always paid on time.
The strength of your personal credit score has a direct correlation to the amount you are looking to borrow. The greater the amount, the more important the score will affect the decision by the lender. Because what does the credit score indicate? It shows the ability to keep an individuals finances tidy. There are extenuating circumstances, like health challenges or horrific student loan stories and some lenders may be willing to consider your personal credit challenges if you are up front and have all your documentation available backing up your story.
I traveled across the U.S. and around the world, and kept meeting unconventional entrepreneurs -- people who had started a business almost unexpectedly, usually without a lot of planning and almost always without a lot of money. Most of them did so for $1,000 or less, and half of them did so for $100 or less. My goal was to tell their stories in a way that readers could use in their own quest for freedom.