On the whole, while it buys Trump some time, in the big picture, it is a big minus for him. First of all, SCOTUS is almost certain to quash his lawyers' arguments that he should be not held accountable for any actions while POTUS. It will certainly delay the trial, but that one or two months is not going to move the needle too much. It would help him if SCOTUS delayed the ruling until June but, if they did that, all hell would break loose. Last but not least, I believe that SCOTUS needs to hear this case before it hears the Colorado Supreme Court appeal and this should enable that to happen. As more and more states disqualify Trump under the 14th Amendment, SCOTUS needs to act and make a ruling, as that decision is obviously not a states' prerogative, but a federal one.
The Court has already heard the Colorado appeal
SCOTUS has heard oral arguments but has not made a ruling in the case. In order to make that decision, they have to first decide if POTUS has absolute immunity.
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