The Scorcher is one of the four skins released under the Riders of the Apocalypse part of the Apocalypse offer. It could be purchased on an individual basis using game coins in mid December 2017.
The Scorcher could be purchased in the Skins Shop under the 'Apocalypse' tab for 1990 coins. It was available for a limited time and may not be available for purchase in the future.
Details of this offer can vary depending on location, platform or time.
Note: The Riders of the Apocalypse sub-offer has been released many times after its initial debut in 2017. While the included skins remained the same, the prices varied between some of these limited time releases. The price of The Scorcher skin in previous releases included 1990 coins and 2390 coins