Sure you can, please try it urself by visiting https://free.nordvpn.com and create a account. It is a full feature account for 3 days.
I am selling 2 years plan only as the price is very attractive. 1 year plan price is very close to 2 years plan so better get 2 years plan.
1 month plan is around rm 35 and I don’t have stock now.
I can help you to create, or you can create yourself. But at least you need a working email so you can retrieve password if you forget it.

Will be in stock soon, will inform you once stock available.
I assume you refer to unlimited bandwidth, then my answer is yes.

FYI, it limited to 6 simultaneous devices connection.

If you want to protect more devices, please set the VPN at router level.