If you dream of being a scientist then such dream shows your desire to learn something new. The dream may also be an indication of the new professional growth you are making.
Dream dictionary: Scientist dream meanings
(Baker | Pastry chef) A pastry chef in a dream represents a man of knowledge, catering a wedding, vesting ranks of authority, or children. A sweets maker in a dream also represents a good and a gentle person, a compiler of literary works, a scientist, a slanderer, or an agitator. (Also see Sweets)
(Architect | Painter) Seeing him in a dream means consenting to reason. He also could represent an opinionated person, an expert, a friend, a real estate broker, a scientist, a commander, or an architect. (Also see Architect | Painter)
…In dreams mines refer to all the treasures and riches that have not yet come to light. To dream a mine it’s an omen of wealth and benefits to a worker, businessman or entrepreneur. To a scientist mine dream represents a scientific discoveries or new applications of science. To a doctor, a dream represents the discovery or the healing of a new disease. To a politician it means founding a political party….