How do you build a credit with an ITIN number?

To build credit with an ITIN number, start by applying for a secured credit card, which requires a cash deposit as collateral. Make timely payments on your credit card and any other loans or bills to establish a positive payment history. Additionally, consider becoming an authorized user on a family member's credit card to benefit from their good credit history. Regularly monitor your credit report to track your progress and ensure accuracy.