Question involving .pcap files

So, I have my pwnagotchi here and after getting permission from a couple of my neighbors and friends to try to crack the hashes my pwnagotchi got, I scp the selected .pcap files over to my machine, and im going to try to crack them with hashcat. I run ‘hcxpcaptool -z name.pmkid *.pcap’ and they all get dumped to that .pmkid file. Is there way to see how many hashes were actually added to that file? Or a way to see if any of the .pcap files have valid handshakes?