I have several bad SNPs, but no evidence of disease, what does this mean?

This may be explained by phenotype: expression of traits and characteristics that arise with interaction with diet and environment. Phenotype thus differs from genotype which is simply your genetic code, not its subsequent potential expression (phenotype). Perhaps you follow an excellent diet and lifestyle or live in a clean environment that minimizes the effects of the SNP. Many mutations also have low penetrance, meaning few individuals carrying that SNP actually exhibit consequences of the variant. It could also depend on age or other factors: a younger person may not have had time for the consequences to develop into measurable outcomes yet. You can read more here: https://ghr.nlm.nih.gov/primer/inheritance/penetranceexpressivity