Options
Is she hulk good?

Is 7 star she hulk good? Only have access to 7star shards through super daily event. Are any of these worth rank up as 6stars?

1
Comments
Just need to learn her style.
Metal Sonic Dude has her at 7R4 and has put out videos on his YT channel showing off her greatness.
Your six stars: my advice would be to focus on Titania and Count Nefaria. Hulk is great, but Titania + She-Hulk cover the same opponents he can manage.
By the way, I don't know what level you have to be in order to access it, but there are accessible 7* shards in the Shooting Stars quest, which is in the Special Quests tab and might be worth looking at.