Trump NEEDS them certify in order to file injunctions and escalate it up the chain in an expedited manner. Without certifications, he can't file lawsuits because there's nothing to file against. This isn't a standard TRO against your abusive boyfriend.

The goal is to get the end as quick as possible with as little arguing merits in court or judge kickbacks. The judge could toss out the suit saying 'the votes aren't even certified yet. You might not even need this lawsuit. Come to me when you have something.' Then you've just wasted your extremely valuable time and resources on nothing on top of tipping your hand and showing your evidence before you may have wanted to.

There's not really a degree of risk since this is a winner take all kind of thing.