Excel Data Cleanup Needed

I’m providing a set of Excel and CSV files that are currently cluttered with duplicate rows and a variety of missing or incorrect values. Your job is to give each file a thorough scrub so the data is fully analysis-ready... (Budget: ₹12500 - ₹37500 INR, Jobs: Data Analysis, Data Annotation, Data Entry, Data Management, Data Processing, Data Scraping, Excel, Python)