How do I make the font larger on my reports?

If you click your name at the top right, you can click into your profile to set the setting at "relaxed" That may make the font a bit larger larger for forms and printing. If you just mean the screen, you can zoom in your Browser with the Browser settings at the top (for example in Firefox its under "View" or else CTRL and a the + will zoom larger and CTRL - will zoom smaller.

how do I reduce the font size

For printing or for viewing?

for printing

Within quick base I am using Integrigo EVend.  My route work reports are so small almost not readable.  I can increase font on main dashboard, but when I open particular report does not change font size.  HELP!!!!