Can someone help me how to go to the following places by bus?

Well, to avenue of stars, you can just walk to the south to reach.
To the peak, you can take bus H1 from East Tsim Sha Tsui Station, Salisbury Road o Southern Playground, Hennessy Road. And then transfer to bus 15 to reach.
To Macau, you can walk to the northwest to HK China Ferry Terminal, and take ferry there to reach.
To Mong Kok, you can take bus A21 from New World Centre, Salisbury Road and get off at Grand Tower, Nathan Road. Or you can take Tsuen Wan Line from Tsim Sha Tsui to reach.
To big Buddha, you can take West Rail Line to Nam Cheong, and the transfer to Tung Chung Line to Tung Chung. After arrival, you can take the Ngong Ping 360 cable car in the opposite of the Tung Chung Station.