I Need to make a chronometer that begins from a certain time, say 60 seconds and reaches zero.
You need an object that initializes a float at 60, that updates it each frame by substracting Time.deltaTime and that checks each frame if it’s value is < 0, in which case it does something.
As Meltdown says, knock yourself out !
make a coroutine and every time that it repeat, decrease a value by WAITFORSECONDS. boa sorte ai irmão.