This is the 2819th most frequent French word.
coûter
To cost.
In this question, 'coûter' is used to inquire about the expense involved.
Combien cela va-t-il me coûter de réparer ma voiture ?
How much will it cost me to repair my car?
The verb 'coûter' is used to indicate the price of an item.
Ce livre coûte vingt euros.
This book costs twenty euros.
Here, 'coûter' is used figuratively to indicate a non-monetary cost or consequence.