Do I have to report child backup reimbursement money as part of my income?

More background here. I put in $5K in my dependent care FSA account in year 2020, and I used the child backup care benefit from employer where my employer hired a third party provider to provide this service. I got $6K reimbursement money from this third party provider since it allow me to use friends and family to provide child backup service. I pay my friends and family, than this third party provider reimbursement me for the child back up care expense. My total child care expense was more than $11K in year 2020. My W2 from employer did show $5K dependent care FSA election, should I also get a tax form to report this $6K reimbursement money that I received in year 2020? this third party provider said they don't provide tax form for my $6K reimbursement. should I still report this $6K as income even know I didn't receive any tax form for it? if yes, how do I report it on TurboTax? I would assume I would report as earned income just like W2 income, but just no W2.