Hi Ha,
You need *DATABASE_Option cards in your input file to be able to write such output files and access the data.
For example, you need to add the *DATABASE_RCFORC card to be able to store and access the rcforc file containing contact forces (where you will be able to get reaction force of the sheet against the punch).
Please see the *DATABASE keyword in the LS-DYNA Keyword User’s Manual for more details:
https://www.dynasupport.com/manuals/ls-dyna-manuals/ls-dyna_manual_volume_i_r13.pdf
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