What to do if there no cost basis on 1099 for stock sold in 2022? But my LTCG compution is correct.

[JohnW152]

If you're asking what to enter in the Sales section dropdown on the Now, enter one sale on your [No Cost Basis] 1099‑B screen, select Long-term basis not reported to IRS (noncovered).

I assume this is what you're asking, since you wouldn't be able to make your long-term capital gain computation without basis information. If this isn't your question, please provide more information.