Did you mean the thing next to the username or the brainwave scanning badge?
The best quality I have. Not transparent around the corners but still probably easy to work with.
This is the exact image of the brainwave scanning badge, directly from scrap.tf. (You may have to click on it or open it in a tab if it doesn't show up.)
Some people like to collect them, use them in a raffle series, or they have a Collector's kit to complete. The bots should definitely be able to replenish within a few hours, or maybe even days.
Valve changed CS:GO items to become untradable for a week once they are traded away. Scrap.TF is not buying or selling CS:GO items right now because of this.