link says access denied…
i guess same laptop here,
https://www.pcworld.co.uk/gbuk/computing/laptops/laptops/dell-inspiron-15-5000-15-6-gaming-laptop-black-10164853-pdt.html
Looks good to me, has new gpu, cpu.
128gb ssd will eventually feel bit small, but you can move some system files to other drives then…
8gb is ok, more would be better as always, but memory you can easily upgrade later.
Almost any system can run Unity, but it depends on the game you are going to make on that System.
If you are making a big game with high quality assets like Textures and Models, then you need a more powerful system, otherwise you can create simple 3D or 2D games using any system below than that specs.
Thanks.
Just be aware if its 64 or 32 bits, cuz new versions unity doesnt support 32 bits.