You will get LLC paperwork or corporation, operations agreement, EIN,/Tax ID number and Dun & Bradstreet Number

You need a certain amount of accounts reporting to Dun & Bradstreet, then you will generate a Paydex score.

No. Your business credit is separate from your personal credit and is not attached to your social security number.

Yes, if you have all of your paperwork in order and depending on your personal credit.