Before you start your literature research, you need to think about two things:
Different objectives are possible, for example: You want to gain insight into a specific problem. You intend to (help) solve a problem with your research. You want to inform others.
For example:
Marco is a manager at a business that delivers laptops at home. Many customers return their products, which results in a lot of waste streams. Nobody wants to buy the returned laptops while they function well. That costs the company a lot of money (problem). That is the problem definition.
Marco asks you, as a higher education student, to design an effective marketing strategy, so that those remaining laptops are bought by customers anyway and thus the business generates more turnover and produces less waste (target). So, we call the design of this effective marketing strategy the objective.
The question is a tool that provides you with insight into the problem that needs to be researched and helps you reach your goal. This is discussed in more detail in the chapter Orientation.