Hi and thanks for reaching out. My name is William. I'm a Windows technical expert. I'll be happy to help you out today.
It is not possible to reset security questions. However, If you cant recall the original pw you set the device up with initially, then you will nee to create a secondary local admin account to reset the pw for your primary account. To do this, you will need to create Windows 10 boot media (on another computer) and boot from it as if you were going to install Windows, but will instead use this environment to create the new admin account. To create Windows 10 installation boot media, see this Microsoft article: https://www.microsoft.com/en-us/software-downlo...
Alternatively, if you have Windows 10 DVD, you can boot from that, too.
After booting from the boot media, go to the section "Create a New User to Save Account Files" in this guide: https://www.howtogeek.com/222262/how-to-reset-y...
Note, the above link assumes your system drive is letter D:. If the command fails, then use C: in place of D: for the copy command.