I Don't Have Any Hot Water Coming Into My Sink In My Bathroom.....

[FBaggins]

5. A couple things to check

There’s either a hose or small copper pipe running from the shutoff to the faucet. Disconnect it (after turning off the supply) and then open that valve a little with a hand towel. If you get soaked then The problem is either that hose or your faucet.

If there’s still no flow, then turn it off again and look for another shutoff valve further up-stream. Some homes have one in the basement for each plumbed room above... though I would think it’s rare to have one for each fixture in a bathroom.