Tax form for prize winnings of $2000 by dependent minor

Hello

In 2022, my son (aged 15 at that time ) won $2000  as a prize in a chess tournament.

He is a full-time high school student and has no other income. He's my dependent. 

 

 What form does my son have to use to declare this income?  Or is this declared in my income tax returns as "income of dependent child"? 

If I'm using Turbo Tax to file my returns, can this be included electronically or will he need to fill our  a paper form?

 

Thank you so much for your help

 

mp2023