Not exactly what you asked, but here is my input. I believe you CAN do service hours, depending on where you live. For example, the Governor of Alabama issued a Quarantine in Place order on April 3. On the same day, the State Health Officer issued this statement and it was posted on the Department of Conservation and Natural Resources web page.
"Outdoor recreation in Alabama is considered an essential activity in the Order of the State Health Officer that was issued on April 3, 2020. That means outdoors activities such as hunting, fishing, trail use, boating, and paddling can still be enjoyed by all Alabamians as long as groups are kept to less than 10 people and a consistent 6-foot distance between persons can be maintained. Additionally, most Alabama State Parks, including campgrounds and associated facilities, remain open with some exceptions.
ADCNR strongly encourages everyone to observe the State Health Order and to practice CDC recommendations regarding hand washing and social distancing (maintaining a distance of at least 6 feet from others). Violating the State Health Order can result in criminal charges and fines.
*Due to the evolving nature of the pandemic, ADCNR recommends calling individual state parks and other facilities if you have questions about reservations or operational hours."
As most (not all) service projects are outdoor activities, if a Scout had a service project planned, as long as there were no more than 10 Scouts and they stayed within the limitations of CDC’s recommendations, that service project could be completed.