all of us has or have?

"all" is plural.

All of us have different stand on what to believe in and it varies because it depends on one’s life experiences.

is my sentence right?

All of us have different stands on what to believe in, and they vary because of different experiences in our lives.

Since "all" and "us" are plural, then "stands" and "they" and "vary" and "experiences" and "lives" need to be plural, too.

The correct usage of "all of us" depends on the context of the sentence.

If "all of us" is the subject of the sentence, then you would use the plural verb "have." For example:

- "All of us have plans for the weekend."

Here, "all of us" is the subject and refers to a group of people, so the plural verb "have" is used.

However, if "all of us" is the object of the sentence, then you would use the singular verb "has." For example:

- "He gives gifts to all of us."

In this sentence, "all of us" is the object of the verb "gives," so the singular verb "has" is used.

It's important to pay attention to the subject-verb agreement in the sentence to determine whether to use "has" or "have" when using "all of us."