Because Microsoft no longer sells these legacy versions, you must find them through third-party channels:
Since Excel 2011 is not a Windows application, you should look for these versions that are fully supported by Windows XP: Download Microsoft Excel 2011 For Xp
A free, open-source alternative that provides excellent compatibility with Excel files and runs smoothly on legacy hardware . How to Get Office 2010 for Windows XP Because Microsoft no longer sells these legacy versions,
Below is a guide on how to handle spreadsheet needs for Windows XP today. Compatible Alternatives for Windows XP Download Microsoft Excel 2011 For Xp
If you already have Office 2003 , you can download the Microsoft Office Compatibility Pack to open, edit, and save files created in newer versions of Excel . Why You Can't Use Excel 2011