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( votes)We can RetrieveTotalRecordCount Function we can get the total number of records for an entity (works for more than 50000 records)
For e.g.
https://dreamingincrm.com/2019/07/22/getting-entity-record-counts/
https://stackoverflow.com/questions/51543802/counting-all-rows-in-dynamics-crm-online-web-api-odata
https://nishantrana.me/2020/05/27/different-ways-of-getting-record-count-total-in-dynamics-365/
Hope it helps..