Yeeeowwww!!!
OK, that out of the way... 🙂 I do know of trans women who've had the hood pierced. None who had it done to the actual clit (to be fair, I think cis women who do so are rare too, as it's such a hugely nerve-rich area). If you wanted that, you might need to check with your surgeon first. I don't personally see any reason why not once you're long-healed, though; I know my own anatomy well enough by now to be confident nothing else was going to be at risk.