Please elaborate what the issue is
Its creating this blue box pillar that I cannot get rid of
Hi chi wail72431016,
that's a known bug with a certain version of InDesign.
The cause is the character formatting underline in conjunction with using a Variable Font.
The bug is fixed with InDesign 2021.
Underline with variable font
When the underline of a variable font is activated, the underline takes the whole height of the page. (Indesign 15.1.2)
François, Aug 31, 2020
What can you do if you cannot switch to InDesign 2021 for whatever reason:
 Use a different font, not the Variable Font type, where you need the underline.
 Do not use underline to indicate a hyperlink. Did not test this, but maybe strikethrough with an offset will work.
( ACP )