VueJS/NuxtJS - Access parent model in child component

I have one component which has one Dropdown.

Then I have one child component which I one textfield and button next to it

from the parent component I loop an array and call child component. Requirement as below:

1. When I click button in child component I needed to know what value is selected in dropdown (in parent component)
2. And when in child component I click second button I want to know what value is selected in first textbox in child.