I found a page for the EIKON Data API https://developers.refinitiv.com/eikon-apis/eikon-data-api/docs?content=49692&type=documentation_item but I wonder if there is something similar for the Refinitv Data Platform?
Yes, there is a request limit in the Refinitiv Data Platform. For example, the reference page of the historical-pricing endpoint in the https://api.refinitiv.com/ mentions two rate limits.
Moreover, the RDP API GENERAL GUIDELINES also mentions Throttling Limits.
However, it doesn't mention the exact number. You may need to contact your Refinitiv's account or Sales team for more information.