ok it is never actually sold with the Laptop Mary, so someone has installed it for you for free, or it was a trial as you would always get a disk to reinstall it from.
You will need to either ask the person to either provide you the disk which your legally entitled to, else you would need to actually purchase it.
If they are not willing to provide this to you then you go to my link below and purchase it from there.https://products.office.com/en-us/buy/office
If it is just word you need, then the personal version will suffice.
There is a free alternative which is called Open Office. It is not as functional as word, but will let you read and open word documents.
This you can get from my link belowhttps://www.openoffice.org/download/
But as Microsoft Office is not a free program, you will need to either obtain the installation disk from the person that was meant to have sold you this.
Purchase it or use the free alternative
If you would like any additional information or assistance, please do not hesitate to let me know.
Else if you can take a second to rate my service by clicking one of the stars at the top of the screen then submit, that would be greatly appreciated.