Organize and Merge Excel sheets in 1 master sheet

I currently track broker relationships in several separate Google Sheets and it’s becoming hard to see the full picture. I need all of that information—every contact detail, each piece of sales data, and all contract specifics—pulled together into one clean, reliable master sheet... (Budget: $14 - $30 NZD, Jobs: Automation, Data Analysis, Data Analytics, Data Integration, Data Management, Data Processing, Data Visualization, Excel, Google Sheets, PHP)