The coin that Elon Musk tweeted about is not PEPE as you might think,
Elon changed his name on the “X” platform (formerly Twitter) to “Kekius Maximus”, and replaced his profile picture with an image
inspired by the popular meme “Pepe the Frog”. This change led to a significant increase in the value of a digital coin called “KEKIUS”, as its value increased by 504%,
and its market value rose to $88.32 million.
On the Binance platform, its market value in one day is 15 million
The “KEKIUS” coin is a meme coin inspired by internet culture, and it operates on multiple blockchain platforms, including Ethereum and Solana.
Its value was significantly affected by Musk’s name and profile picture change, reflecting the significant impact of his social media moves on the digital currency markets. 
It is worth noting that this is not the first time that Musk has influenced the cryptocurrency market through his activity on social media, as he has previously influenced currencies such as Dogecoin and Bitcoin with his tweets and changes.
For more information about Elon Musk's influence on cryptocurrencies, you can watch the following video: