[Help me, HELP ME]

i need to make it so that when a player kills a cow it drops a raw beef named "&fBeef" but i need it to be so that when they have looting 1 it will drop 1, looting 2 drops 2, looting 3 drops 3, 4 4 and so on if possible

[Can someone help me with this skript:]

command /cowset:
    permission: mobspawn.use
    permission message: &cNo.
    trigger:
        set {cowlocation} to player's location
every 10 seconds:
    spawn 1 cow named "&fCow" at {cowlocation} <--- this line does not work

[i need help to make if u right click stone with a wooden pickaxe it gives you a pebble ive already made some of it]

on right click on stone with wooden pickaxe named "&eStarter Pickaxe &7(Right click stone with this)":
    set event-block to air
    give 1 clay ball named "&7Pebble" to player

 

i need you to make it a 10% chance to give the player a clayball when you right click stone with a wooden pickaxe

[Help me]

How do i make it so that if i place a white wool named "&fWool &6| &fTier 1" it will destroy itself after 5 seconds? 

Ive been stuck with this for hours