World Bank is an IGO with a vast website partially because it serves two functions.
Here are some places to start on the World Bank Website.
Official open access repository for research
World Bank Data has three different access points. Please keep in mind that each dataset is tagged with a "terms of use" which provide details on restrictions. World Bank lists external datasets in their catalog if they deem it relevant to the development issues.
In alignment with the World Bank’s initiatives on openness, on June 30, 2024, World Bank Group Publications will be discontinuing the World Bank eLibrary.