Health and Human Services Secretary Margaret M. Heckler is scheduled to undergo a hysterectomy today at Columbia Hospital for Women. HHS spokesman Campbell Gardett said yesterday that the surgery is elective and that cancer was not involved. The 54-year-old former congresswoman is expected to be hospitalized a week and be home recuperating for several weeks . . .

The American Spectator is coming to town. After nearly 20 years of publishing the monthly neo-conservative review in Bloomington, Ind., editor in chief R. Emmett Tyrrell Jr. is moving the publication to offices in Arlington. Tyrrell, who founded what he describes as an "irreverent, intellectual review" while a student at the University of Indiana, joked yesterday that "After five years President Reagan has sufficiently pacified the Washington region for me to move there." . . .

If you happen by the east side of the Capitol in front of the House of Representatives early this afternoon and see a group of people spitting watermelon seeds, that's what you're seeing. The National Watermelon Association and Rep. Bill Cobey are sponsoring a watermelon feast and a seed spitting contest. They apparently do those things back home and four watermelon queens from South Carolina, North Carolina, Maryland-Delaware and Florida will be there, too . . .

It probably won't come as a surprise to anyone, but Vice President George Bush, the early favorite to run for the big job in 1988, will receive the Ripon Society's Republican of the Year Award tonight at the Hyatt Regency Hotel on Capitol Hill and a number of the party's big guns are expected, including Sens. Mark Hatfield, Pete Wilson, Alan Simpson, William Cohen, Dave Durenberger, Slade Gorton, Charles McC. Mathias and Daniel J. Evans . . .

A James Bond film is probably just what a bunch of spy types shouldn't be seeing. But last night both the chairman, Sen. Dave Durenberger, and vice chairman, Sen. Pat Leahy, of the Senate Select Committee on Intelligence were at the Motion Picture Association of America to see Roger Moore in "A View to a Kill," the latest Bond picture. The film has not had the best reviews, but Leahy got his friend MPAA president Jack Valenti to get it for the showing, which was to include as guests several CIA types and FBI Director William Webster . . .

It probably was only a matter of time. Dr. Ruth Westheimer, who has been so successful with her sex advice on radio and telvision is now about to become a board game: "Dr. Ruth's Game of Good Sex." It has to do with couples moving their pieces around the board accumulating "arousal points" . . .