How to Make Headings Bold

I'm trying to make my headings and titles stick out more than they do. I want them bold, but the only options in the Typography section are Normal, Italic, and Oblique. How can I make my headings bold? I've tried increasing the font weight, but that doesn't seem to do anything. Thanks in advance!

Here's an example of what it looks like now https://www.skillzpromocodez.com/skillz-solitaire-cube/

Edit: Nevermind I figured it out. Increase font weight to 700 for desired bold.