By just adding code to these tools will not do it, Your best chance is to have 1 serverscript which adds values to the leaderstat and localscript to perform things such as animation.
Using remote functions you should be able to make the items deal damage to the player and add points when their dead.
It sounds like you want the forum to help you create an entire system. Unfortunately, this forum isn’t to write entire scripts for you, but to help you learn and point you in the right direction on your coding adventure. I’ve included a couple handy guides regarding tools and leaderboards that you can peruse and learn from if you’re so inclined! I’ve also included a link to AlvinBlox’s scripting tutorials as those are really good to watch when you’re starting your coding adventure for the first time!