The 3rd Stimulus payment you received should be listed on line 13. Isn't it there? Unless you have a high income to phase out the credit, the only important lines are 8 and 13. The Turbo Tax worksheet should match the IRS worksheet. Did you fill out the IRS worksheet by hand to compare it to Turbo Tax?
See IRS worksheet for line 30 in 1040 instructions page 59
https://www.irs.gov/pub/irs-pdf/i1040gi.pdf
Line 30 is only if you didn't get the full amount or qualify for more.
