If you got retroactive payments due to Bill 124, you likely got a Form T1198. You can just enter this form into TurboTax.
But, In TurboTax 2024, the T1198 is not finalized yet. We're working hard to finalize this form to align ourselves with CRA requirements, and we hope to have it ready soon.
You can see a list of Forms that still locked here: Why does TurboTax say my forms are locked or haven't been finalized?