What data file do I need to move to my new computer so that my 2024 data will be there when I start my 2025 return?

I would copy the folder that should be in Documents/TurboTax  If you saved your program to the default location then there are *.tax2024 files in that location.  I would also copy any saved PDF files of your taxes that you saved.  If you have older TurboTax then there will be *.tax2023 files that I would save at least the last seven years.

Thank you.  Like the idea of copying the entire folder.