Scroll TGE have absolutely nothing to do with the fact that ETH might have a bullrun though, scroll is just another layer 2 solution, there's also nothing worth nothing of this blockchain except that it's gonna be the same as other blockchain.
moreover, been hearing some bad news about their TGE anyway over the twitter, I don't think the TGE reward will also be that much, at best it will be few dollars to hundreds, the reward is diluted, the scroll mark is also diluted, last time I remember they also give scroll marks to some defi protocol address, you can guess what would be the result.