According to Genesis, Noah waited seven days before sending out the dove from the Ark.
Genesis 8 records Noah sending a raven first, then a dove to learn whether the waters had receded. After the dove returned because it found no resting place, Noah waited another seven days and sent it out again. The question’s answer refers to that explicitly stated waiting interval before the dove’s second release.
The passage then describes the dove returning with a freshly plucked olive leaf, and Noah waiting another seven days before sending it out once more. Because the story includes several bird releases and repeated intervals, readers sometimes attach the wrong number to the wrong event. The answer is seven days for the waiting period Genesis states before the dove is sent out again.