Scoreboard with a timer

Hi,
I'm a new developper and I not very good because it's my first plugin
so, my problem is : I know how to make a scoreboard cuz I saw many tutorial video
but i don't now how to make a scoreboard with a timer of time (20 minutes a day minecraft)
I know I need to do a loop with if and else
but this timer shoud continue to all poeple is dead
tanks so much for you answer !
sorry if I did fault my English isn't perfect

 

@ointune
Have you tried using Google?

How to set up scoreboards:
https://bukkit.org/threads/tutorial-scoreboards-teams-with-the-bukkit-api.139655/

From there, you need to create a RepeatingTask that will update the scoreboard every ___ ticks.

If you mean you're a new Java developer (as in you have recently learned Java/have not learned Java) then I highly recommend getting used to the basics of Java before working with Bukkit. If you need a resource as to where to learn, you can find one here.

I would highly recommend you don't learn anything from videos, as most of them teach bad habits/ methods for doing certain things. If you need to learn how to do something, please search for tutorials or threads on the Bukkit forums containing your problem. (I.e. Google "Bukkit help [your problem]")

 

Okay thanks for your answer but there are again somethings I don't understand how to put 20 minutes in my sheduler ?
ah and I didn't precise that I need to do a commande for start the scoreboard and tp other player at a locality wich I shoud specify at the plugin can you tell me how to do that ?