If you have (any) questions, (do something)

"Having questions" means that you want to ask about something.

English speakers often talk about what someone can do if they "have questions":

If you have any questions, please contact us via our Facebook page.

If you have any questions, I'll be glad to answer them.

You can also put this phrase at the end of a sentence:

Let me know if you have any questions.

This phrase appears in these lessons: