You can still upgrade your Windows 7 to Windows 10 free.
Here is an article on this. Article Link, cNet.
And here is the Microsoft page to download their Media Creation Tool
You must go to this Microsoft page while you are on your Windows 7 Computer, otherwise, Microsoft will take you to the wrong page.
I have found it takes about two hours to do the upgrade, depending on the speed of your internet connection and the speed of your computer.
DO, DO, do a back up of all important files before you do this. While I have not had an issue, there is no grantee that you won't.
I can also do this for you. Either bring me your computer or we will install Teamviewer and I can do it remotely. Cost? $100.00
In NZ, call me on 06-880-0000
IN the US, call me on 808-498-7146