Drupal 8.X module for a stats
you can get with ths module a stats for node and field .
With list o field that you can chose type of opration and content type that you need .
First you need install module .
than go to block Layout to add some block.
Chose back type stats box.
here you need to chose content type and if you want just published node after you need chose field and opration (Sum, MAx ..) after save block and that all
Note you need chose number field for (Sum, max ,min ,avarage)
when yoou chose Count operation you dont need field so let it default