The vaccines do not stop the virus 100%. But the risk of getting infected isvmuch lower than if you are unvaccinated. Many people in the US, in particular in the South, are still unvaccinated, and while a person infected with the original COVID-19 virus would infect 2.5 people on average, the new Delta variant is much more infectious. A person with that variant will on average infect 3-4 other people. This leads to a much higher infection rate. The good news is that if you get infected in spite having got acvaccine, your case will likely be less serious than if you did not. It may save you a week or two in the hospital and a lot of suffering, not to mention significant medical expenses.
Here is a link to more info:
https://www.yalemedicine.org/news/5-...-variant-covid
Whatever your gamble is, Good luck !