How do you insert blank lines or carriage returns at the top of each text section in the compiler?

How can you do this in the compiler options so that there is more space between the title and the text in that section?

In the Section Layouts in the compiler, choose the Suffix tab and put the required number of carriage returns in there.

Between the title and the text, for an ebook, if that is what you are compiling to, CSS will help:

https://forum.literatureandlatte.com/t/epub-3-separator-between-sections/41431/2

Slàinte mhòr.