I wonder if TeX/LaTeX can create fillable forms in a scanned pdf, such as this one. I would like to fill out the places that are required to fill out. Thanks!
I don't think this is within TeX capabilities (using an existing form). You can do this using Adobe Acrobat Pro by going to Form -> Start Form Wizard. It will try to figure out the form fields automatically. The automatic detection is rarely correct, so I usually need to adjust some of the fields manually. There may be an open source way to do this, but I'm not aware of it.