After unzipping the file, you will have a folder that contains the different designs. Inside each folder will be 3 different file types.
You will choose the file that works with your machine. Most machines such as Cricut, use the SVG file which will start with "SVG" in the file name and end with .svg . Even though some computers call them "Microsoft Edge" or "Chrome" files they are still SVG files.
If you are using a Silhouette machine, you will use the .studio3 files (begins with "SS") and if you are using a laser that uses the Lightburn software you will use the .lbrn2 files (beginning with LB).
You will open your machine's software and usually click a button that says "upload" and then select the correct file type from the list.