I want to do the following project "I Need to be Real-Time Stock Price and Variation Dashboard - Power Pivot, Excel

Hi, I want a dynamic interactive dashboard in Excel that updates in real time, allowing me to view the opening and closing prices of stocks listed on the Bovespa index. I want to monitor the daily percentage changes, interest rate fluctuations, etc. and the percentage discrepancy between shares with positive and negative performance, updated every 15 minutes, from 9am to 6pm. For better representation, I would like to use line, pie and bar graphs. Thanks
AND how much time is needed to complete it??