The week of 11/07 (the most recent all of this data has been available), Vermont saw 2,582 confirmed Covid cases. Of those, 902 were fully vaccinated (the highest of any week) and 1,680 were not fully vaccinated (no data on partially vaccinated).
452,450 people are vaccinated in Vermont and 171,539 are not fully vaccinated.
So fully vaccinated people in Vermont contracted Covid the week of 11/07 at a rate of 199 per 100,000. Unvaccinated people in Vermont contracted Covid at a rate of 979 per 100,000.
In other words, unvaccinated/partially vaccinated people are about 4.9 times as likely to contract Covid in Vermont as vaccinated people. Virtually the same stat we're seeing everywhere else.