in schedule A Line 1b(2) it is stating my date range of 1-1-2024 to 12-31-24 and when i review my return it states an error of 366 days. What am i doing wrong?

You did nothing wrong; 2024 was a leap year and had 366 days.  Try changing the start date to 01/02/2024.  

I had the same issue but it might be caused by a different situation than yours. I had to enter two lines under 1b(2) because I was taxed at two different tax rates (8.25 and 6.25) during the year. I had entered 01/01/2024-12/31/2024 on both lines and that caused my problem which generated the 366 days error. I changed the dates to split the year based on when I made the purchases. For the 8.25 tax rate, I used 1/1/2024-11/30/2024 and for the 6.25 tax rate I used 12/1/2024-12/31/2024 because I made that purchase in December. That fixed my problem and allowed me to transmit my return.

This might be a workaround. Use two lines  for 1b(2) and put the dates for half the year on one line and the other half of the year for the second line???? It would be helpful if Turbo tax modified their software to allow for leap years. Hope this helps.