我看句子应是：If I can do anything,I will do the number myself
如果我可以做任何事,我就会亲自表演这歌舞.（or 亲自发表这演讲.）
number 除了是数字以外,也是有以下的意思：
1.song/dance [countable] a song or dance,especially one of several in a performance
2.Slang A frequently repeated,characteristic speech,argument,or performance
eg.suspects doing their usual number—protesting innocence.
满意我的答案的话,请考虑给个“最佳答案”吧.因为在进行任务.