Sitecore Version: 9.2
While Sitecore forms provides us with a brand new & improved robust interface to build forms (yes I wasn’t too fond of WFFM!), it certainly has its kinks (albeit fewer and fewer by each release!
While you work with forms, there are multiple scenarios dur to which your forms might not be visible on the forms dashboard!
While there is no indicator on this forms application, or even in the url at this point – do verify, go into Desktop app – are you on Core database?
That was the culprit for me! Switch to master, and voila! Forms are back!