powerbi

I just started my work it’s been 1 month I am working on an online learning platform site,like udemy . In mythey  workplace  gave me an excel sheet so I did data cleaning and created a dashboard, it’s a monthly basis to create an updated report, I have worked for May month, Now I have to work for June month data, For that, I want to pull data from the website directly to Powerbi through API schema, So that I can show update and add additional data for June month in the existing may month dashboard. But I don’t know how to pull it from online learning site to powerbi through API. Can anyone help me with this?