Verb + 了 + 不少 + Noun
不少 (bùshǎo) literally means "not few" and is used to express "quite a few" or "a considerable number of." It functions as an adjective or adverb to indicate that the quantity of something is larger than expected. It is commonly placed before a noun or after a verb to emphasize abundance.
今天来了不少客人,比我预想的多。
Jīntiān láile bù shǎo kèrén, bǐ wǒ yùxiǎng de duō.
Quite a few guests came today, more than I expected.
她学中文的时间不长,但进步不少。
Tā xué Zhōngwén de shíjiān bù cháng, dàn jìnbù bù shǎo.
She hasn't been studying Chinese for long, but she's made a lot of progress.
这家店的评价不少都是五星好评。
Zhè jiā diàn de píngjià bù shǎo dōu shì wǔ xīng hǎopíng.
Quite a few of this store's reviews are five-star ratings.