It’s unclear whether you have the same disease as most people on this forum have. If it looks like this: What does it look like? (photos) and you have it for a long period (months or years) and have tried all kinds of things including antibiotics, than you can try topical ivermectin, preferable in the form of Soolantra.
Otherwise it could be something else, like AnnieMoe says, staph for example. And like she says, don’t scratch it and don’t pick your nose, because if it is staph, than you’re helping this bacteria to colonize itself.
Here’s some info about ivermectin from animal products: Does yours spread?