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There are a couple of things that you can do in this situation..
Click here: https://www.facebook.com/help/contact/169486816475808
Select Someone crated an account pretending to be me or a friend
Follow the prompts to report the account.
Next, go to the profile and click on the 3 dots (next to messages) then click on Report and use that option to report as well.
After you complete both of those reports, Facebook will review the requests and close the account. Please remember that the process is not instant and it can take a couple of hours to days to complete the review and closure of the account.
If you can take a minute and use the rating system to rate our session as 3 stars or higher and press Submit so I am credited with helping you.
Okay, thank you.