The Super Meter is located on the lower left corner for the first player and on the lower right corner for the second player. It is composed of four bars, which can be used individually for Meter Burn moves, or all four bars for one Super Move. The Super Meter is filled-up whenever you hit your opponent, you get hit by your opponent, or when you perform a special move. One way of safely gaining meter is to continuously spam "safe" special moves, which are special moves that are not that punishable even if they whiff, such as most projectile specials.
Super Moves are done by pressing the Switch Stance and Meter Burn buttons simultaneously. They require all four bars of the Super Meter to be able to used. They have high priority, deal high damage, and cannot be teched or clashed out of, and on top of that they can also be comboed into or juggled into as well. There are different types depending on the character, ranging from normal attacks, throws, overheads and others.
Super Meter/ Super Moves Example