Function to collect this Data

Hello Community!
I'm Wilca and I am new user in Excel

This is the mayor part of my book of finances, I need to find the right function to collect the weekly amounts of each category from the second smaller table in capture below  (orange table) to the monthly one (which is in Spanish, hope you know what I mean, I changed the necessary part to English)

Which function do I need?

Thank you very much in advance for your help!