Where can I get a fillable PDF 1099 misc form
Why do you need one? You can use Quick Employer Forms to prepare them if you have the Online Premium version or the Desktop Home & Business program.
Here is the IRS 1099MISC
https://www.irs.gov/pub/irs-pdf/f1099msc.pdf
You will also need the 1096 Transmittal form
https://www.irs.gov/pub/irs-pdf/f1096.pdf