Hi, I sold on Amazon FBA, I bought merchandise for around 2000 dollars. I made some sales on Amazon but then the rest of the merchandise did not sell so I lost.?

Are you going to continue selling on Amazon? If not what did you do with the unsold merchandise?

No Im not going to do it this year, Im just storing the merchandise

You can claim your merchandise purchase in the inventory part of the self-employment section. 

Opening balance: zero

Total purchase: $2000

Closing Inventory value: The cost of whatever you have left.