How many Jumah salat can we pray on a single Friday? Answer, no more than one. However, here is a way that will get you reward of praying more than one Jumah on any given Friday.
Prophet Muhammed (s.a.w) said:
Whoever invites towards (the path of) guidance shall receive a reward equal to the rewards of those who follow him without this decreasing anything from their rewards. (Sahih Muslim)
Using this formula, if you invite 9 of your friends to offer Jumah with you and they respond to your call then you will get the reward for your own Jumah plus nine additional Jumah prayers. You can increase the number by as many as you want!
How great is Almighty Allah who has made earning for the hereafter very easy.
"And whoever guides others towards good is equal to the doer of good." (Tirmidhi)