That's very difficult to know, but most studies of "superimmunity" were done on people who got sick and then got vaccinated, not the other way around (and those generally were patient contacts, so often more severe than symptoms that would normally be treated at home).

The only way to have a known, titrated response is to be vaccinated. And the vaccines actually are free, and the side effects are very low and they're safer than aspirin. And they're designed to bypass innate and intrinsic immunity and to stimulate humoral immunity -- where the natural virus has a gene that specifically tries to combat the host humoral immune response.

The fetish for natural immunity is ascientific. Every bit as much as something like Steve Jobs rejecting surgery for his cancer in favor of natural alternative treatments.