It doesn’t have to.
The UK Government’s challenge will delay the Bill getting Royal Assent― where the King approves a Bill and so makes it become a law.
The UNCRC Incorporation Bill says it must come into force within six months of receiving Royal Assent. But that doesn’t mean children and young people in Scotland have to wait the full six months: they’ve already waited long enough.
After Royal Assent, the Scottish Government has the power to make the law commence before six months have passed.
Adult duty bearers across Scotland should work to make sure incorporation happens as soon as possible. Nothing about the UK Government’s challenge changes that.