The CDC updated mask guidance on July 27, 2021.  If you are fully vaccinated, the CDC says you can resume many of your pre-pandemic activities.
The CDC recommends fully vaccinated people wear a mask indoors in public in areas of substantial or high transmission to maximize protection from being infected with the Delta variant and potentially spreading it to others.
Continue wearing a mask or physical distancing where required by federal, state and local regulations.
Check your specific state and local regulations for more details since stricter guidelines may be in effect. The CDC states unvaccinated people should continue to wear masks and stay 6 feet apart. Visit the CDC website for more information.