The IRS website (and the turbotax website) make it very clear that you don't need to have adopted a child yet to claim the credit, which means you wouldn't have that information.
"A domestic adoption is the adoption of a U.S. child (an eligible child who is a citizen or resident of the U.S. or its possessions before the adoption effort begins). Qualified adoption expenses paid before the year the adoption becomes final are allowable as a credit for the tax year following the year of payment (even if the adoption is never finalized and even if an eligible child was never identified)."
https://www.irs.gov/taxtopics/tc607
According to the instructions you would just leave those fields blank:
"If you can't give complete information about an eligible child you tried to adopt in 2021 because the adoption was either unsuccessful or wasn't final by the end of 2022, complete the entries that you can on line 1. Leave blank any entries you are unable to complete."
https://www.irs.gov/instructions/i8839#en_US_2022_publink23077td0e752
