well this is an easy random item skript

[ethanpangx3]

Every 20 seconds give player 1 item out of all items

[SuperOrca]

1) This doesn't work
2) Use code blocks to make it look nicer
3) Here is a working version:
 

every 20 seconds:
	loop all players:
		give loop-player (random element out of all items)

 

[ethanpangx3]

ok

[RainbowRhino]

where do i put the scrip when i get it?

 

[SuperOrca]

First, make sure you have Skript installed in the plugins tab. In the file manager, go to plugins > skript > scripts. In that scripts folder, make a file called like scoreboard.sk and put that skript in there and click save. Then in game do /sk reload scoreboard and then relog.