The Dutch booked their place at Brazil on Tuesday following a 2-0 victory over Andorra courtesy of a Robin van Persie brace.
The undefeated Group D leaders have won all their games bar one in World Cup qualification, but van Gaal doesn't see that as a reason to predict a big tournament for Netherlands next year.
"There is now a World Cup and you have to perform well there," Van Gaal told reporters.
"We have a very young team with a few older players, I hope we can get past the first round."
Netherlands host Hungary before travelling to Turkey in their remaining group matches.