Literal; research details for clarity
In spiritual terms, profit is energy or power gained commensurate with the amount of effort we are prepared to put in, in anything we do.
Psychological / emotional perspective: Simply, if we profit from something we gain benefit. In dreams we are made aware of possible emotional or material benefits through the symbolism of profit.
Material aspects: The idea of profit and loss comes from the material world and the need to control resources. In dreams the meaning is widened to all sorts of resources not just financial, though if there are financial worries we may well dream of some kind of accounting procedure. You might also like to consult the entries for money and wealth.