Please ask your question in a complete sentence.
A couple of sentences using the word copious are:
The journalist took copious notes.
Our host provided copious quantities of food.
Use it's (with the apostrophe) only when you mean "it is" or "it has." For example: It's time to go. (It is time to go.)It's been a long time. (It has been a long time.) Use its (without the...