Slah/prayer in the Islam is most important thing, and no one ll be good Muslim with out perform prayer 5 time in a day,

And after a week on day of Friday, the Allah did order to the all Muslim believer to perform juma prayer on Friday,

The importance of this prayer is highlted by the Allah in surah juma in Quran,

So if someone miss the juma prayer for any reason, like sick,on travel, or not in city,

So in these all conditions will perform zuhur prayer instead of juma,

But remember that the missing juma prayer is not allowed to anyone without above mentioned condition’s.

Jazakallah