Sentence with Meningar med någon - Yes or NO questions Ja- eller Nej-frågor

Hi as part of my grammar I learnt that någon can also mean a / an in yes no questions rather then en or ett, below are some examples if someone could correct that would be lovely:

Om du har något/ett ögonblick, kan du hjälpa mig? If you have a moment, can you help me?
Har du fått något glas? Have you received any glass?
Har du fått någon flaska vatten? Have you received any bottle of water?
Om du tycker du om någon godis sedan tar det. I don't really understand what you are trying to say here. The translation is: If you like a candy later takes it.
Om du har någon stor bil. If you have any big car. This sentence doesn't feel complete. It's missing the context. It'd be possible to say for example: Chefen vill veta om du har någon stor bil. - The boss wants to know if you have any big car.