The correct Land Rover fluid is green which is a good quick check. Don’t recall it being expensive.
Assuming a F2 from your signature, you need to use the correct spec fluid - CHF202. You can easily cause damage to the power steering pump otherwise.
Edit; And be sure to bleed it correctly if required - before starting it. They are very prone to damage caused by air in the system!
Have a look in this thread - covers a lot of it for you, with pics courtesy of @Arctic2.Freddie, thanks - think I will just call into JLR on the way to work tomorrow if they are open and grab some oil
Where would be the best place in the car to bleed it from?