Please refer to "7. Industry Analysis / The Refinitiv Business Classifications (TRBC)" from https://developers.refinitiv.com/en/article-catalog/article/eikon-data-api-cheat-sheet
Your question is fairly broad. Perhaps, you can provide a little more detail about a specific company and an example of the information you are looking for? The Search function defined in the Refinitiv Data Platform Library for Python within CodeBook provides a means to search for details within organizations.
Did you first try to search for your information within Eikon/Refinitiv Workspace? That might be a good start to ensure your data is available.