what is the difference between "has become" and "has became" ?

In standard academic English, "has became" does not exist.

Present perfect is formed from the auxiliary verb has/have plus the past participle.
For the verb 'become,' the past participle is 'become'
become - became - become

In some regional varieties of English, people use the simple past in place of the past participle, so they may say things like "They've went there." instead of "They've gone there." That may be why you have heard "have became"

However, for academic and professional purposes, you should use [have become]

There is no such verb tense in English as "has became." There is "became" and "has become." The difference between them is that "became" is past tense and "has become" is past perfect tense.

"Has become" actually means something. For example - "through working hard at his languages, he has become multilingual".

"Has became" is both wrong grammar and also meaningless. The correct word is simply "became".

I hope this helps and wish you well with learning our strange language.

Has Became

Become Became

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RE:
what is the difference between "has become" and "has became" ?
what is the difference between "has become" and "has became" ?

Could you give me some examples ?

PS: I'm a English beginner
PS2: I will report spamers