Even if Catwoman doesn’t become an ongoing character in the franchise, there’s a pretty damn good chance that it will raise the actresses stock and she’ll start being offered much bigger roles.
It seems quite likely that playing the role of Catwoman in The Batman will change that.
While it’s certainly early, we have no idea how big the role actually is or how the character will fit in the story, Batman is DC’s most successful character at the movies so it’s basically guaranteed the movie will be big.