Yea so my way is easy. You don't need to have a friend.
Only a cpu or a local mate.
FOLLOW THE RULES SLOWLY. IF MESSED UP YOU'LL HAVE TO QUIT THE GAME AND LAUNCH AGAIN.
Step1: Go to online.
Step2: Go to ranked matches.
Step3: Go to a timed only game.
Step4: When it says searching for games... please wait, cancel.
Step5: This time do it again but when it says connecting, click cancel.
Step6: Go to a versus game.
Step7: Put lives to 1, difficulty to whatever you like, and play as your best character.
Step8: Start the game.
Step9: You should win, and it awards you 4 points like normal.
You can keep clicking Y for rematch.
PLEASE NOTE THIS IS THE FASTEST ROUTE ON GETTING POINTS.