The first version of my dashboard took me an hour or two.
I'd been sick of logging into my accounting software, my customer system and a couple of spreadsheets just to see where the business was at. So I built one page that shows me the lot, and I've never written a line of code in my life. Since then I've built my own websites, the back end for some lead gen sites (normally something like High Level at five or six hundred a month), and a full ads manager that does what an agency would charge two and a half to three grand a month for.