The super meter is typically stored as a float value , where 50 represents a full meter. By using "increased value" scans after parrying or hitting bosses, you can find this address and lock it at 50 for endless Super Arts.
If you aren't using a pre-made cheat table, follow these steps to find values yourself: cuphead 1.3.4 cheat engine
If you search for "Cuphead 1.2.0 cheat table" or older, you’ll find they simply crash the game or cause graphical glitches. That’s because Studio MDHR changed how the game stores player health, weapon cooldowns, and invincibility frames in memory. The super meter is typically stored as a