status dropdown in form? i'm getting desperate here

Hi..

I am working on a project that needs to have a dropdown menu in a form that will attach a status to it (waiting,completed,problem) i have tried setting up a databse collection for the statuses, but for the love of god i can’t make it work, i can see people here talking about a tutorial about it, but i can’t find it. i would appreciate any help, my app is to help lost dogs find their home by asigning a “chip scanner” from our volunteers all over the country. any help would be appreciated.