Numerical Data Entry Consolidation

I have a set of existing spreadsheets and other digital files that contain purely numerical information—sales figures, quantities, and other metrics. I need every value transferred with 100 % accuracy into one clean, well-structured file... (Budget: ₹600 - ₹2000 INR, Jobs: Data Analysis, Data Cleansing, Data Entry, Data Management, Data Processing, Excel, Google Sheets, Mathematics)