You've probably got a broad topic that you've either been given or that you've chosen. Going from a research topic to a question requires a little reading upfront. Once you have a good foundational understanding of your topic, you can decide what you'd like to learn more about.
The Libraries has a couple encyclopedic databases to to help you better understand a topic and the issues it covers: CQ Researcher and Credo Reference. These are good resources for helping you narrow down your research topic to something manageable.
If my topic is "immigration," I can see from this page that there are a lot of sub-topics to consider, like immigration as it's connected to the labor market, US immigration policy and how it's changed over the years, conditions in South America that are the cause of citizens fleeing their home countries, etc. If I click on the topic pages of any of those, I will start to get an understanding of what the current trends, questions, and policies are - then, I can start thinking about my question.
If my topic is "deforestation," in Credo, I can read the definition of deforestation and get a sense of how extensive the problem is. If I look through the Related Articles or Topic Pages, I can see that there are many causes of deforestation, like agriculture, climate change, or population growth and many effects, like erosion or loss of biodiversity.
I'll also notice that many different parts of the world are affected differently by deforestation and my paper should probably only focus on one region.
This video examines the process of selecting a topic for your research assignment and has an example of how you might adapt your topic if you're having trouble finding scholarly research.