As stated on the instructions for the Form DR0021W - https://www.colorado.gov/pacific/sites/default/files/DR0021W.pdf
You must attach one copy of this form to your “Colorado
Severance Tax Return” (DR 0021) in order to claim credits.
If you need additional information about severance tax, see
publication FYI General 4, "Severance Tax Information for
Owners of any Interest in any Oil and Gas Produced in
Colorado," on our Web site
These forms are not supported by TurboTax