From Race Course to Tsim Sha Tsui(https://www.travelchinaguide.com/attraction/hongkong/kowloon/tsim_sha.htm), take Island Line(https://www.travelchinaguide.com/cityguides/hongkong/transportation/metro-island-line.htm) to Admiralty, then transfer to Tsuen Wan Line(https://www.travelchinaguide.com/cityguides/hongkong/transportation/metro-tsuenwan-line.htm).

if you want to take Hong Kong tram(https://www.travelchinaguide.com/cityguides/hongkong/transportation/tram.htm) first, then change to Hong Kong MTR(https://www.travelchinaguide.com/cityguides/hongkong/transportation/subway.htm), you may take the tram to Central, and then take Tsuen Wan Line.