Forked Template 404

I utilized this template , I followed the instructions but when I try to access https://healthcalc.github.io/healthcalcapp I get a 404 error?

Hello and welcome here!

Your repository just does not have Pages enabled yet. You can do that in the settings of your repositories under the Pages section.

You can find detailed instructions for that right there: Configuring a publishing source for your GitHub Pages site - GitHub Docs.

Hope that helps,