Can i say we have had in a sentence?

Yes, you can say "we have had" in a sentence, but it needs to be followed by an object. For example:

* We have had a great time.

* We have had many challenges this year.

* We have had enough of this.

"Have had" is the past perfect tense of the verb "to have." It indicates that an action was completed at some point in the past.

Let me know if you'd like help writing a sentence using "we have had" in a specific context.