What questions should i ask in a date? Which ones to avoid?

Asking for help/advice

33 years old

I got some new pair of jeans, shirts, etc recently based on the advice of a worker at the shop who helped me a lot.

I was at an event and i just asked her out. She was actually interested but i have to go to a trip so i will try to follow up her in august.

If ahe asks what is your past relationship history? What do i say? I did not have any dating experience.