Making lvl system for drugs

I need help making a level system for some of my drugs on my server, so if the person has been farming 10k of something he will level up, and the process of making the drug is getting faster and faster, how can i make that?

Was your current system built from scratch or does it rely on an existing framework? (ESX, QB, vRP etc)

Its vrp

Here is both the client and server luas of what i have right now


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Try reaching out to a dev?