This is the 2048th most frequent Russian word.
вс
"вс" is an abbreviation in Russian, often standing for "Вооружённые силы" (Armed Forces).
In this sentence, 'все' is used as a pronoun meaning 'all' in the plural form.
Все студенты присутствовали на лекции.
All students attended the lecture.
Here, 'всё' is a pronoun meaning 'everything' in the singular neuter form.
Я хотел всё сделать сам.
I wanted to do everything myself.
Once again, 'всё' is used to indicate 'everything,' applied in a different context—bets or choices.