For a deeper look into our Eikon Data API, look into:
Overview | Quickstart | Documentation | Downloads | Tutorials | Articles
There's no straight answer to this question and no specific number we can provide. I suggest referring the client to the following document:
https://developers.refinitiv.com/en/api-catalog/eikon/eikon-data-api/documentation#eikon-data-api-usage-and-limits-guideline