The minimum credit FICO score for most business cards is 680. Some community banks and credit unions are less dependent on FICO scores and more dependent on your time and quality of relationship with the bank.

You'll find dozens of cards available in your geographic region and nationwide. 

Absolutely! You can be an Uber driver or DoorDash delivery person and you can sign up as a sole proprietor. 

You can increase your credit limits repeatedly with multiple funding rounds, usually every 6 months.

Yes, True high limit unsecured business credit cards will almost always need to be personally guaranteed.

Yes, ONLY during sign-up up, but after that it will stop reporting to your personal credit bureaus.