What does it mean when people ask you this “22. whatch up 2? ”? sorry lol i’m not an english speaker

When a fast, careless speaker says something that sounds like"Whatch up 2 ?",

the actual words in his mind are

"What are you up to ?"

The meaning, according to informal, casual English usage is related to

... What occupies you ?
... What are you busy with ?
... What fills your attention now ?
... What are you doing ?
... What have you been involved with recently ?"