They should have included the screws in a package in the trunk (along with a loose front bracket). Use the 2 holes that are showing in this image outside the stripe area. Do NOT use the impressed area that is within the stripes. You will also want to put a small self adhesive "bumper" dead center on the back of the plate. That way the plate won't damage your stripes (if you have stripes) or your paint. The small bumper you apply should be hitting on paint between the stripes. Home Depot has clear vinyl self adhesive small bumpers that are appropriate. Good luck.
Thanks to all for your responses.They should have included the screws in a package in the trunk (along with a loose front bracket). Use the 2 holes that are showing in this image outside the stripe area. Do NOT use the impressed area that is within the stripes. You will also want to put a small self adhesive "bumper" dead center on the back of the plate. That way the plate won't damage your stripes (if you have stripes) or your paint. The small bumper you apply should be hitting on paint between the stripes. Home Depot has clear vinyl self adhesive small bumpers that are appropriate. Good luck.