In Jain Agam, breaking the vow of brahmacharya is a serious fault. The result is mainly:

• pāpa-bandha: bondage of sinful karma
• atichār / doṣa: a serious transgression of the vow
• prāyaścitta: confession, repentance, and prescribed atonement

If it is a layperson’s vow

The person becomes दोषी of vow-breaking, and must do:

• alochana: honest confession
• pratikraman: repentance
• prāyaścitta: atonement as guided by guru/ācārya

If it is a sādhu/sādhvī’s vow

Then it is considered a very grave violation, and the tradition prescribes strong prāyaścitta according to the fault, such as:

• repentance,
• fasting,
• special penance,
• or other disciplinary atonement.

In simple words

In Jain Dharma, the “punishment” is not revenge or external penalty, but karmic bondage and the need for purification through repentance and penance.

If you want, I can also explain the Agamic view of brahmacharya for shravak and sadhu separately.