Sweden has a decent airforce and navy, enough to make things tough for Russia. They seriously lack troops though after ending mandatory conscription some years ago. Finland still has conscription, 100k active troops and something like 1M in reserve, though can't probably arm half that. We have a good amount of artillery too, 2nd largest in EU by some metrics.

Until Russia pulls out of Ukraine, regroups and re-equips they probably have no chance of winning. Not entirely sure that's gonna stop them from trying, but would think that's unlikely. More likely cyber attacks, blackmailing of politicians, fake news campaigns, all kinds of provocations they can come up with.