@norumbegaeclectica
If you are using a typical desktop computer you can use copy (control-c) to copy text onto your clipboard; and paste (control-v) to put that text somewhere else.
If you are using the eBay app, try dragging your finger across text to select it or tapping the text to copy to the clipboard. If successful, you should see a "text copied" note when you remove your finger. To paste the text into a text field, tap on the text field and use the clipboard icon at the top of the keyboard. Exact details may depend on your particular device's operating system.
