In the videocassette world, Paramount Home Video is releasing Eddie Murphy's smash hit "Beverly Hills Cop," and the low $29.95 price is expected to made it available to a vast number of private collectors. Paramount has been the leader in mass marketing videotapes and made "Raiders of the Lost Ark" one of the biggest sellers of all time by reducing the price from the usual $79.95 to $39.95 . . .

The Alfred A. Knopf publishing company also expects success in the videotape business by marketing six different cooking course cassettes by television's best known cook, Julia Child . . .

Actor Rock Hudson is apparently going to make certain that he is more than a symbol of AIDS. A spokesman for him in Los Angeles says the actor, who is suffering from the fatal disease, will make a large contribution to launch a foundation bearing his name to finance research into acquired immune deficiency syndrome . . .

Washington actress Maureen Kerrigan won an Emmy award Friday in Philadelphia for outstanding individual achievement in acting. She appeared in a docudrama titled "Shattered Dreams" on WKYW, Channel 3 in Philadelphia . . .

Italo Calvino, one of Italy's most famous modern writers, remained in a coma and was fighting bouts of fever yesterday, eight days after undergoing brain surgery. The 62-year-old author suffered a stroke Sept. 7 . . .

Anthony (Captain Tony) Tarracino, a well-known Key West, Fla., character who runs a famous saloon called Captain Tony's, which has been popular with writers and other celebrities in the Keys, has announced he will run for mayor of Key West. The 69-year-old father of 12, with a wife who is expecting the 13th, Tony was a shrimper who brought the first refugees from Cuba in 1960 and was an adviser to the U.S. government in the ill-fated CIA-backed Bay of Pigs invasion of Cuba . . .

Maybe the Miss America pageant needs Bert Parks more than the organizers know. Sunday night's show, the dullest in memory, brought out some of the strangest talent acts since Ted Mack's "Original Amateur Hour" went off the air . . .