A worker honey bee frontal view
There are many things that you can do to support bees - much depends on how involved you want to be. Assembled, in list form, are some of the things that you can do:
Learn to identify what bees you see.
Read Bulletin #7153 from the University of Maine, Cooperative Extension, Understanding Native Bees, the Great Pollinators: Enhancing Their Habitat in Maine
Contribute financially to bee conservation work.
Make and post photographic observations of bees to INaturalist.
Sign up for an iNaturalist Account
Sign into iNaturalist
Spread the word to your neighbors about the benefits to bees of using less (or no) lawn herbicides.
Join the Maine Entomological Society.
Participate in Citizen Science.
Plant and manage bee forage.