I want to use turbotax. But it showed "You've got this. Based on our estimate, you can finish in 54 minutes. I cannot do anything.

Do not stress about being timed.  That is nonsense.   Take all the time you need.  The filing deadline is April 15----you can take until then if you need to.

But what do you mean by  "I cannot do anything?"   Where are you stuck?

TURN OFF Racetrack mode !

Then use the menus to navigate thru all the areas you need to fill out.