In Jainism, there is no specific maximum number of monks (sādhus) prescribed or limited by doctrine. The number of Jain monks and nuns (sādhvīs) varies over time and depends on how many individuals choose to undertake renunciation and are accepted into the monastic order by their respective traditions (Śvetāmbara or Digambara).

Historically and in modern times, the total number of Jain monks and nuns has been in the thousands, but not reaching "crores" (1 crore = 10 million). Jain scriptures and tradition do not mention a maximum number, as renunciation is open to all who are qualified and willing to follow the rigorous path of Jain monasticism.

If you are referring to scriptural or mythological accounts of very large sanghas (monastic communities), there are stories of large numbers of monks in the retinues of Tirthankaras, but these are symbolic and not considered literal population counts.

In summary: There is no fixed maximum number of Jain monks; the tradition does not set such a limit. The actual number is much less than a crore, and is determined by how many people take diksha (initiation) and follow the rules of Jain monasticism.