My csv numbers file saves to zip but when I tap it say successfully unzipped but can’t find the csv file

Greetings lenore85,

Thanks for visiting the Apple Support Communities! It seems you're unable to locate a file after unzipping a file on your iPad.

Check out the information in the following article: How to open ZIP files on your iPhone, iPad, or iPod touch - Apple Support

"How to uncompress a ZIP file 

1. Open the Files app, then find the ZIP file or archive you want to uncompress.
2. Tap the ZIP file or archive.
3. A folder is created containing the files. To change its name, touch and hold on the folder, then tap Rename."

See if you're able to locate the file using the steps above, and attempt to search for the file: View files and folders in Files on iPad - Apple Support

Kind regards.