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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
First hurdle. ExpressJS isn't a great framework on it's own for building web sites. You need to cobble together some combination of a view engine, templating etc otherwise out of the box you'll end up handcrafting HTML which I don't think is what you want right now. I'm not up on the latest server-side web frameworks and don't think now is the time to get into react + nodejs. So I'll just suggest Sails: https://sailsjs.com/. Follow their intro guides to get yourself a basic website with text entry.