It looks like you’ve got a file named . Based on the name and the extension, this is the first part of a split 7-Zip compressed archive. While I can't "open" the file directly, I can certainly write an essay about what this specific file likely represents or the broader context of digital archiving it belongs to.
Once all parts are present, you only need to right-click the .001 file and select "Extract." It will automatically pull the data from all the other numbered parts.
Standard Windows "Extract" tools usually can't handle split .001 files.