怎么样is used to ask about the condition of something or someone.
For example:
nǐ de hàn yǔ zěn me yànɡ ?
你的汉语怎么样?How is your Chinese?
mínɡ tiān tiān qì zěn me yànɡ ?
明天天气怎么样?What will the weather be like tomorrow?
zuó tiān de zú qiú bǐ sài zěn me yànɡ ?
昨天的足球比赛怎么样?How was the football match yesterday?
nǐ men de xīn fánɡ zi zěn me yànɡ ?
你们的新房子怎么样?How's your new house?