I am assuming this is for marketing on a website, or something like that.The casual and conversational way to say this might be:

Receive $20 for each one you sell!

Also, in my opinion, it would sound better to say what it is, rather than using the word "one"

For example "Receive $20 for each subscription you sell!" or "Receive $20 for each pillow you sell!"

please correct my English sentence. Thanks.

You will get $20 for each one sold.

(This is the natural way to say it)

please correct my English sentence. Thanks.

Or,

You will get $20 when they sell each one. it.