With your purchase, you will receive one zip file that contains the file formats. You will need to extract the .zip file to your computer from your downloads folder to see all of the files that are contained within. Locate the .zip file, right-click and select extract (extract all) and your files will be extracted to the location you choose. I prefer my downloads folder.
For Cricut Design Space, you will use the .svg. For the Silhouette Studio, you will use the .studio3 or dxf files. For the designer edition of Silhouette Studio, you can also open the .svg. Please check your machine/software to be sure the file type you need is included in the list mentioned above.