how's your business going?
Can I ask like this sentnece? could you recommend suitable questinon?

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you could ask that but its a bit impolite unless you know the person well. A better way to phrase that would be "Is business good?"

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In the right context, it's perfect. You will often hear just "How's business?" or ""How's business for you?"

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how's your business going?

Answer

H:
(looks at S)
How is your business going?

https://business.tutsplus.com/articles/7-tips-on-what-information-to-put-on-your-business-card--cms-25194