How to make an ore drop a random amount of an item between two numbers and also give xp?

I'm currently making silver ore and I want it to drop between 1 - 4 chunks of silver and also drop between 0.5 to 2 xp. I'm new to MCreator and have no idea how to use the procedures, I looked up a few tutorials but none show me how to do that. I'm sorry if this is asking for much btw.