This is the 244th most frequent Russian word.
всего
"Всего" means "in total," "only," or "all in all," depending on the context.
Here, "всего" is used as a particle to emphasize the small amount or limitation ("only").
У нас всего пять минут до начала.
We only have five minutes until it starts.
Here, "всего" functions as a pronoun, indicating everything, in the context of "all the best".
Желаем вам всего наилучшего.
We wish you all the very best.
In this case, "всего" is used to underline how minimal the time was to achieve this.