Bees are unusual among dream-insects in carrying a mostly positive charge — productivity, community, sweetness — but a swarm or sting shifts that meaning toward its more demanding side.
A single bee, calmly observed
Often reflects a healthy relationship with productivity or a small, satisfying piece of work — steady progress rather than pressure.
A swarm of bees
This more intense version usually points to feeling overwhelmed by the sheer volume of demands on you — not one big problem but many small obligations arriving at once, echoing the insect-swarm anxiety pattern but with a productivity-specific flavour.
Being stung by a bee
Can reflect a specific instance where effort or productivity that should have paid off instead caused pain — an unfair outcome from doing "the right thing."