You can purchase official recovery disks directly from the HP Support site.

Frequent listings for 16GB USB recovery drives are available for about $19.99. 2. Local Options: Getting Help Nearby

Stores like Best Buy (Geek Squad), Micro Center , or Memory Express often provide this service.

Microsoft actually provides the tools to create a recovery drive yourself for free. All you need is a working PC and a USB drive with at least of space. Go to product viewer dialog for this item. Acer Recovery DVD Disk 32/64 Bit

Finding and Creating a Windows 10 Recovery Disk: Your Complete Guide