I need help finding a right pickguard for my dad's Ibanez and I want to find a right one so no more holes need to be drilled in the guitar.(1975 Ibanez 2455 Lawsuit Archtop L-4 CES Rare Gibson headstock)
I think finding the EXACT one will prove difficult. Your best bet is to type in "archtop pickguards" and fine one without any holes already drilled, then drill the holes into the pickguard matching the locations on the guitar.
I know that there are companies that make custom pickguards, which is easy if you're trying to replace one- they ask you to send it in. They may also be able to make it if you don't, but have pictures , specs & measurements...or they've made one before. Here are a few:

Sturgeon's 2nd Law, a.k.a. Sturgeon's Revelation: “Ninety percent of everything is crap.”

Why, yes, I am a lawyer- thanks for asking!

Log off and play yer guitar!

Strap on, tune up, rock out!