Filling what out? If you have little or no credit, review the information at the sites below.
https://www.nerdwallet.com/blog/finance/how-to-build-credit/
https://www.creditkarma.com/advice/i/how-to-build-credit-from-scratch/
https://www.credit.com/blog/2019/04/how-to-start-building-credit-once-you-turn-18-139817/
