How can I take a top-down image of my games map?
I’m assuming you mean in Studio.
1: Go to the VIEW tab.
2: Enable View Selector.
3: After you do so, navigate your mouse toward the View Selector, position your camera to where “Top” is visible on it, then click “Top”.
And then you’re finished! Your camera will change its orientation, and you will now see a top-down view of your map. Keep in mind that trying to rotate the camera will snap it back to its normal limits.
Once all of these steps are done, you can take a screenshot.
If you simply mean IN-GAME, you can simply press LeftShift + P at the same time to activate Roblox’s freecam, then you can position your camera to where you want to take a screenshot. This method has less restrictions than the top-down view in Studio, but it may or may not be difficult to get it perfect.