Hello,
Navigate Products > Attributes > Choose one > enter editing mode > Disable “Show attribute label on products”
The second issue: do you mean rewrite wording “quick view” or you want activate/deactivate? So, if you want to rewrite you can translate all theme and plugin texts via PO file in WordPress. Here is a video tutorial that should help you translate your website texts with a Loco Translate plugin https://www.youtube.com/watch?v=D3NsDdMzsls&list=PLMw6W4rAaOgKKv0oexGHzpWBg1imvrval&index=3
If you want to activate/deactivate, navigate to Theme Settings > Shop > Quick view
Best Regards