how to transfer microsoft office to another computer

It depends on how you purchased Microsoft office. If you bought it outright then install the correct year of office and use the product key you received. If you pay for the monthly subscription you can control which computers you have it on, and one license can be on up to 5 computers. So install from your online account to the new computer, then remove the copy from the old computer.

I agree that you need the product code from the original software purchase.

you can install your Microsoft office into new PC or Laptop and Copy your files into new Computer

To complete this tasks, you have to have a product key and use that key to set up Microsoft on the second computer.