What to do if you live in a town in which there is no Masjid?
What if you can't find a job that will allow you to take off Fridays?
Ibn Qudaama mentions that if a person is in a town in which there is no Masjid, and the closest Masjid is further than 3 miles in another town then that specific Jumu'ah is not obligatory upon him.
A few things to mention:
1) The proof they use is the Ayah in Surah Al-Jumuah itself, "O you who have believed, when [the adhan] is called for the prayer on the day of Jumu'ah [Friday], then proceed to the remembrance of Allah and leave trade. That is better for you, if you only knew."
-Meaning that one should be close to the call to prayer in order to respond to it.
2) Al-Mardaawi (817 H.), a Hanbali scholar mentions:
"As for that which is used as a permissible excuse for missing Jumuah is the fear of harm in ones livelihood for that which he needs to live."-Al-Insaaf
-Meaning, That in the case where one has no other form of income and he is completely reliant upon that one job to eat, live, etc, then in this case it's permissible (according to some scholars) to take the Job until another one comes available.
3) It's mentioned that 3 people are sufficient enough for Jumuah, even though the Hanbali Madhab disagrees and says 40. In any regard whatever opinion you follow and you have that number Jumuah should be made in that particular place if it's far from a Masjid in another town.
Allah knows best.