Result: 1× Redstone Comparator
Redstone Comparator is a shaped crafting recipe that uses 7 items: 3 Redstone Torch, 1 Nether Quartz and 3 Stone. Place the ingredients exactly in the pattern shown above. The pattern can sit anywhere on the grid as long as its shape stays the same. It needs the full 3×3 grid, so you have to use a crafting table.
You need 3 Redstone Torch, 1 Nether Quartz and 3 Stone — 7 items in total, arranged as shown in the crafting grid. The recipe gives you 1× Redstone Comparator.
Yes. The recipe needs the full 3×3 grid, which only a crafting table offers.
It is a shaped recipe: the arrangement matters. You can shift the pattern around the grid, but the shape must stay the same.