Примеры

as many as - (столько), сколько;
as many as possible (с сущ. во мн.ч.) - как можно больше;
as many as three years - целых три года;
as many... as - столько ... сколько;
as much /as many/ as - (столько) сколько;
he tried to sew up as many votes as possible before the convention - он старался обеспечить себе как можно больше голосов еще до съезда;
In former times, a king would have as many as 100 people attending (up)on him. - В прежние времена короля обслуживало до 100 человек.;
to be of as many shapes as Proteus - уметь перевоплощаться, как Протей;
to give as many details as possible /all possible details/ - дать все подробности;
try and rope in as many helpers as possible - постарайтесь заполучить как можно больше помощников;
twice as many / much (as) - в два раза больше (чем);
you may take as many as you need - можешь взять столько, сколько тебе надо;