The letter 6475 from the IRS is telling you how much they already sent you for the 3rd Stimulus payment. Not what you can get.
If the IRS thinks they sent it to you but you didn't get it request a trace for a missing third Stimulus payment
https://www.irs.gov/newsroom/questions-and-answers-about-the-third-economic-impact-payment-topic-j-p...
