As of today, Muni has restored bus service on two lines that serve Sunnyside, the 23-Monterey and the 36-Teresita.

The 36-Teresita returns to the level of service before the drastic Covid-related cuts of April 2020, and the 23-Monterey returns as a shortened line. It will no longer go out to the San Francisco Zoo or Ocean Beach, instead going to West Portal. The other bus line serving Sunnyside, the 43-Masonic, was restored in June 2020 but has been shortened (full info here).