What exactly do you need help with?
Your question is rather vague..
There are NUMEROUS tutorials on using the tooling module of Inventor Pro and there are tons of tutorials on using "derive" to create mold halves..
http://forums.autodesk.com/t5/Inventor-General/How-to-create-a-simple-mold-in-Inventor-2013/td-p/386...
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Inventor 2023 - Dell Precision 5570
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