Go to node website https://nodejs.org/en/
In my pc node was installed before which is 10.16.3 but you can install 12.13.1 (LTS Recommended For Most Users) because LTS means Long Term Support
Download and install
Now open command promt and write node -v then you’ll see what version use are using of node.
create a folder and name it whatever you want
create a file and name it whatever you want with .js extention
Write the simple code in there
Open command promt on this folder and write command node
YOURFILENAME like node
And magic!!! see the result!
So can you install the node right now ?