2 issues I find when deleting projects:

1 - When I go to my dashboard https://railway.com/dashboard page, in the Projects section, we should have an option to delete the project right there. It doesn't make much sense that we can see the project list, but not delete them.

2 - On smaller screens like mine, 13", the sidebar inside the actual project's settings page, where the Danger tab is that allows us to delete a project, isn't visible and isn't scrollable (only the panel on the right is):

I only knew there was a tab, because I decided to zoom out (by chance) enough to show it: