Is this sentence right ? 用两个语言把自己介绍
The correct classifier for 语言 is not 个, but 种
The following are grammatically correct
用两种语言介绍自己
以两种语言介绍自己
两种语言的自我介紹

I want to have a Chinese title for it

双语 (bilingual) is less wordy and more literary than 两种语言 (two languages) which is more colloquial
As a title, a noun phrase feels more formal than a verb phrase
Depend on your preference you can consider:
以双语介绍自己 = Introduce Yourself Bilingually (verb phrase)
or
双语自我介绍 = Bilingual Self-introduction (noun phrase)