The Apify RequestQueueClient.get can return a stats dictionary related to the usage of the request queue, for example:

{'readCount': 0, 'writeCount': 1, 'deleteCount': 0, 'headItemReadCount': 0, 'storageBytes': 74}

Expose it in the ApifyRequestQueueClient.

One way could be to add it to the metadata in crawlee like this RequestQueueMetadata and populate such value in all clients