U+0032 U+20E3 · emoji since 2010
The keycap two is the number 2 on a button. It means second place, pairs, duos, and round two of anything.
It also moonlights as the word too or to in playful number-speak, and counts options when you are weighing two choices.
In texting, 2️⃣ does not carry a widely used hidden or slang meaning, so you can usually take it at face value. People send it just as it looks, to add a little visual touch or set the mood of a message. Only a handful of emoji have a separate texting code, and 2️⃣ is not really one of them.
Its official Unicode name is the Keycap 2 emoji. In everyday chat most people just call it the keycap 2 emoji or describe what it shows. Copy and paste it from the button at the top of this page.
The 2️⃣ leads off a short phrase, and the rest of the words are written in cipher, every letter disguised as another emoji. Tap decipher to reveal the whole line.
Or make your own cipher in the translator.