How do I use / when do I use 앖어요 and 있어요?

Kinda, I hope comments below help you and believe that you're looking for '없어요?' and '있어요?'.

//  없어요? //

'없다' means not exist or don't have on my possession.

'없어요.' is more polite way of mentioning.

Hence '없어요?' is just to query on something based on '없어요.'.

'나는 오늘 밤 쓸 돈이 없어요.' = 'I don't have money to spend tonight.'

//  있어요? //

'있다' means exactly the opposite of  '없다'.

'없어요.' and '없어요?' are same understanding way of above.

'마실 물이 충분히 있어요?' = 'Do you have enough water to drink?'

Kindly