I was wondering how you would you a timer count down leaderboard example:
How would I clear all the players on the board when the timer hits “00:00:00”?
(Then save the cleared player list on a datastore)
If anyone could help me it would help tons!
Fire all clients when the timer hits 0 and use a dictionary of the top x players as paremeter so each client can locally set the right values.
I guess ThatTimothy has covered that in a #resources post: Post here!
Although, I don’t know much about global leaderboards since I don’t ever use it or don’t have the time too. 
I made a tutorial on how to make one: How to make a simple global leaderboard
The key is just that; Change the key you save to & load from.
For example, the key could be day:month:year. To get the countdown, you do a bit of math to figure out when the clock will reset.
This was a bit brief, so if you have any more questions feel free to ask! 