This would be before the formation of the United States. There are few if any passenger lists for ports other than Philadelphia (this city required lists of non-British immigrant that were kept as court records). The United States did not require passengers lists prior to 1820. Your best bet might be to look for emigration records in the section of France that your ancestors left from.
Dear Ms. Fitzwater,
Thank you for posting your request on History Hub!
As the previous poster mentioned, until 1820, the U.S. Federal Government did not require captains or masters of vessels to present a passenger list to U.S. officials. We suggest that you contact the Maryland State Archives and the Maryland Historical Society to search historical newspapers or other colonial holdings for accounts of your ancestor’s immigration.
We hope this is helpful. Best of luck with your family research!
I found some people born is France, 214 in Federal Naturalization Records between 1790-1800
Maryland, U.S., Federal Naturalization Records, 1795-1931 | Ancestry® I used the following Search parameters