Hi,

Do you mean the post mega menu content? If so, the total number of posts depends on the layout and the number of rows selected in the mega menu settings. This number cannot be changed; only the number of rows can be adjusted.

If you need to display more posts, I recommend building a mega menu block by following the documentation at this link: https://soledad.pencidesign.net/soledad-document/#megamenu-builder 

Regards,
PenciDesign.