Approximately is the word .It's impossible to say without having a complete journey log from that time. Google keeps giving ships and their passenger lists but full times are much harder to find. The Mauretania crossed from Liverpool to New York leaving after 6pm on February 11th 1911 arriving there at 9pm on the 16th. So she took only 5 days; she however was modern, luxurious and swift then. It looks as though the typical time would have been 7 to 8 days; times from Bishop's rock, the last land near Ireland on the southern run ( Liverpool-New York is via Northern Ireland) ran from just under 6 days, noted as fast, to 8 days in the 1890s, typically .
That leaves the France to Liverpool bit. This would be from Le Havre. Let's say three whole days for that. So we are looking at eleven or twelve days, when you allow for times of loading and any waiting for tides.
The journey to Liverpool could certainly seem slow. A famous jeweller's,Wartski's now off London's smart Bond Street, was founded in Llandudno, North Wales by a Polish immigrant headed for New York from Gdansk. Arriving at the great port of Liverpool , after what seemed ages afloat,he heard English .His last stop had probably been in France. He assumed that he had arrived in America and got off; the ship left without him.

Llandudno was a seaside resort used by the rich from Liverpool in Summer; he could not compete with the big jewellers in the city so he followed the families and set up by the seaside instead; no competition there, just clients. On such shrewd, lateral, business thinking fortunes are made. Now, if only he'd stayed on the ship!