How to determine UCC?

This is my first time filling with vehicle expense. I bought at 22 December 2022 but I start to Dashing and UberEat delivery on July 2023. So when I input the date I acquired the car which is 22/12/2022, TurboTax ask for UCC which I don’t know how to calculate, I did ask expert about that she ask me input 01/01/2023 as the date of acquired, TurboTax changed to Total cost of the vehicle before taxes. So right now I am kinda conflict what to input

One is 22/12/2022 but I dont know the UCC of beginning of 2023

Two is 01/01/2023 to put total cost of the vehicle