Yes, Go to a Protest. Then Donate to an Abortion Fund.
It's very unlikely that the Supreme Court will change its mind in any meaningful way. Go scream, then also help people get abortions.
AbortionPolitics

Following the leak of a draft Supreme Court opinion showing that the justices appear ready to fully overturn Roe v. Wade, groups including Planned Parenthood, Women’s March, MoveOn, Liberate Abortion, and Ultraviolet are staging an all-day protest on the steps of the court and hosting rallies across the country on Tuesday and pre-planned rallies on May 14.
People should absolutely go—by all means, unleash some primal screams—but they should not expect that it will change much about the draft opinion. In addition to marching and yelling, people should donate to abortion funds and other groups helping people get care and helping them if they face criminalization for their pregnancy outcomes.
Planned Parenthood itself apparently thinks mass protests could alter the outcome, with Kelley Robinson, executive director of the Planned Parenthood Action Fund, telling a Washington Post reporter: “I think everything is possible with the will of the people.”
I guess, but these are unelected, life-tenured justices on the brink of achieving a decades-long victory—they have very little reason to care. Even if Chief Justice John Roberts is able to peel off one or two of the justices who reportedly agree with Justice Samuel Alito’s horrific draft opinion, and get them to side instead with Roberts’ reasoning, the results would still be disastrous for people who can get pregnant.