Salam alaykum, question about isa (AS)

I am currently studying so I apologize if I said anything stupid, “When prophet isa (AS) was a child he was studying the wisdom and information of the torah placed by Allah (SWT)” this quote was said in a video telling the story of Isa (AS), why would Allah (SWT) put information and wisdom in the holy book of jews? And why did Allah (SWT) give the injeel to prophet isa (AS), why didn’t he give him a quran for example?