In general seeing a bee in a dream signifies that you things will move in an upward fashion in your professional life. This will largely be the result of your own hard work and dedication. There other interpretations also however depending on the circumstances in the dream and your mood in the dream.
Seeing a bee flying in the dream signifies good success in your professional life which will come largely as result of honest, hard work. This dream can also mean that your work will be noticed in a sense by other people.
Sometimes simply seeing a bee in your dream can point that you will be entrusted with more duties in your life. This interpretation is especially true if the bee seems to be picking up nectar from flowers in the dream.
Seeing a swarm of bees also indicates success in your professional life however this dream points to more of a team success. In other words you will be a part of successful team for whom success you will be also credited.
If a bee lands on you in the dream it means that you will be able to use your past work and experience to good effect in the future. Someone will indeed appreciate them and they will offer cooperation with you.
To be stung by a bee in the dream generally signifies some rather surprising and unpleasant news that will be related to your professional life. If the sting is not painful to you it means that you will be less affected by the news. However if the sting is very painful it means that the news will have a profound influence on you and your decisions about the future in your professional life.
To kill a bee in the dream signifies that you will have a significant falling out with a coworker or a business partner.