How to calculate dates for each month in a column with output to a separate cell?

Question

Google Sheets

Dear Khabrovites, I looked through all the possible questions on Habré. but did not find anything similar.
How to calculate dates in a column for a specific month and display the number in a cell

And I would be very grateful if you could help with the moment of counting by last name, how many dates are found in the line with the last


name shoot, and my knowledge of their requests is no longer enough