In the future - go to the doctor! They can use a medical version of superglue if you can't take the needle. My dad just had a gash in his forehead glued after a nasty fall. It looked awful for a week, but when the scab fell off it looked great - better result than with stitches.
At this point, once it heals you could rub vitamin E lotion on it to reduce the scar. Hopefully there's a funny story about how you got this gash - scars can be good conversation starters
