This is the 133rd most frequent Macedonian word.
колку
"Колку" means "how much" or "how many" in English.
In this sentence, 'колку' (kolku) is used to inquire about a quantity or a measure, asking 'What time is it?'
Колку е часот?
What time is it?
In this context, 'колку' (kolku) is used to ask about a specific number or quantity, related to the books the person wants to purchase.
Колку книги сакаш да купиш?
How many books do you want to buy?
Here, 'колку' (kolku) introduces an adverbial clause of degree or extent, indicating the intensity of the concert's beauty.