Question for specialists in protocol eigrp sends several types of data from those data (query) what is the purpose why it sends?

query is used to query routes from neighbors (multicast; unicast attempted up to16 times if multicast gets no response)

When a router is performing route computation and does not have a feasible successor, it sends a query packet to its neighbors, asking if they have a successor to the destination. Queries are normally multicast but an be retransmitted as unicast packets in certain cases; they are sent reliably.