I'm going on a date with someone who I am not sure I have feelings for
What makes you think you don't have feelings for them?
I have never been in a relationship before so want to try to have one.
Part of going out with other people is to get to know each other and maybe fall for each other. It is normal to figure out if you like them or not by dating.
I think it's because I want to get away from my parents. My parents would be mad if I didn't stay home.
While your parents just want to keep you safe, they shouldn't keep being a helicopter. Your feelings matter a lot and you are allowed to experiment and get to know your own preferences. I'm just saying, perhaps you can compromise with your parents instead of just going out unannounced?