As it was over $600, you should receive a 1099-K from the online platform. The IRS will also receive that. So you will have to file that income somewhere. The distinction to be made is whether this was a one off event, or self employment. If it was a one-off thing you can report the income on your schedule 1, and offset it with the giver's value to show no profit according to the instructions in the IRS article I linked. If this was a regular activity that could be considered self employment, then you will report it on a schedule c, and enter any expenses you have to offset the income.
