I'm having the same issue with TT 2021. The roll-up to the Income Summary page shows $0 but the details are there when I click on Update. I went to Forms and the Schedule C and the income is correctly shown there.
I also noticed that the 1099-NEC for the previous year shows up as 1099-MISC in the Income Summary page. I double checked my 2020 return and they were correctly entered as 1099-NEC. If you have any resolution to this, would appreciate it if you could share.
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UPDATE:
It appears that on the 2021 Income Summary page, the 1099-NECs are rolled up into the line "Business Income and Expenses (Sch C)" under the section titled "Business Items". When I click on the "Update" next to that line, I see the aggregate (gross amount) of my 1099-NECs and the net after my business expenses. To see the individual 1099-NECs, you still have to go back to the line "Income from Form 1099-NEC" and click on the "Update" button next to that line.
It is not very intuitive but I can see the logic.
