I had my first contracting job, I'm trying to fill out a 1099-NEC but it won't allow me to put $0 for Federal income tax withheld- where do I put this information?

Not sure if I'm adding the 1099-NEC in the correct area on Turbotax, I'm assuming this wouldn't be within self employment since it was a company who hired me. Also is there an area where I can get mileage write offs for a contractor job?