Is this repairable? Maybe jb weld? Lol if no where can i look up the part number?

 

Ouch! Not JB Weld. A real weld done professionally could fix it but mending and re-creating part of that line. I am not sure offhand where to suggest you take it to but that is what it will take to hold pressure reliably again.

You can find all the exploded diagrams on partsouq where the part number for that line or its full assembly will be listed. It is hard to say if those lines are still in stock at Lexus.

Alternatively you may be looking at getting a used line from a junkyard Lexus SC. Either a local junkyard or a listing for this high side line on ebay will be your best bets for that.

 

Also, you may be able to remove it and take it to a good hose shop in your area. They can re-create AC lines with braided lines these days that will hold the pressure and not bleed off I believe. It won't have the hard line routing, but you could use a few little p-clamps to secure it with the desired routing.