How would I make this 'Pointer UI'?

[KrxKenDev (KRAKEN)]

Hi devs,
I need to make an arrow UI that points to a specific part, but I don’t know how this is done.
Any help?

Here’s a famous example of Blox Fruits

[KrxKenDev (KRAKEN)]

Nevermind, I got it
by doing some math with camera