Ask how something is or what someone thinks
どう asks how something is or what someone thinks about it.
JLPTN5
... は どう ですか~ wa dō desu ka
How is [thing]? / What do you think of [thing]?
Example Sentence

Welcome home, how was today?
Use どう to ask what something is like, or what someone thinks of it. Mark the topic with は (pronounced wa) and follow with どう: 'how is ...?' or 'what about ...?'. The polite form is どうですか.
Tips and Common Traps
Hana· Key point
どうですか is a friendly all-rounder — use it to check on someone's experience, offer something, or gently invite an opinion.