Can rabies symptoms appear in hours if pet dogs nail scratched my foot? (no pain, no blood, alcohol didnt sting, i got anti rabies shots april 2020). local doctor said i dont need boosters (he didnt even look at the scratch). is he right?

Yes: A dog scratch, as you described, given your vaccinated status less than a year ago, you should not worry about rabies. Have a healthy diet, exercise 30 minutes/day, drink plenty of water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. For nutrition: http://www.choosemyplate.gov/. Get HPV and Covid vaccines. Wish you good health!