Is there a limit on the number of indulgencs one may receive per day?

[Slow_Burn]

How many plenary or partial indulgences can one receive per day?

 

[Jim_Blackburn]

Although there are exceptions, in most case only one plenary indulgence may be acquired per day while there is no limit on the number partial indulgences.

For more details see Apostolic Constitution On Indulgences (Norm 6).