Multiplying your investment by 100 with Pepe (or any other ultra-volatile crypto) is theoretically possible, but it is more of an exception than a rule — and it requires understanding exactly under what conditions it can happen.
Concrete example: An investor who buys Pepe at $0.00001000 and sells at $0.00100000 will have made exactly x100, but in the meantime they will have seen their portfolio fluctuate violently.
Without patience and discipline, most exit well before reaching x100.