Are you asking how long for a seed to germinate? That's strain dependent but generally, you would expect to see something within 5 days to a week. I saw mine within 2 days. Others have taken a week.
If you mean from the day you start germanation til it pops open and the first leave appearence usually 3-7 days.It wont llok exactly like a full grown leaf but you will see it usually yellowish at first showing