You can access the dataset on the World Bank Data Catalogue, which contains additional metadata and API access.
Alternatively, you can use the World Bank DataBank to select the series, countries and time periods you are interested in.
Public licenses
The World Bank Group makes data publicly available according to open data standards and licenses datasets under the Creative Commons Attribution 4.0 International license (CC-BY 4.0). Many datasets are available under other licenses. They are labeled accordingly, and when users access them, users agree to comply with all of the terms of the respective licenses, as explained here:
Data Access and Licensing