Powerapps radio button spacing

1. How do I reduce the space between two radio buttons in flutter?
2. Should radio buttons be stacked?

How do I reduce the space between two radio buttons in flutter?

you can give materialTapTargetSize the value MaterialTapTargetSize. shrinkWrap that will reduce the extra space it is taking, however it won't remove all the extra space.

Should radio buttons be stacked?

Use radio buttons when the user can choose only one option out of a list. Use these for a small number of discrete elements—avoid long lists of radio buttons (usually no more than 6-8 options). When there are more than two options, stack radio buttons vertically.