Here is the meaning in English, based on Jain tradition:

• Badi Sadhu Vandana is the longer form of Sadhu Vandana, recited especially during Pratikraman (a ritual of reflection and repentance) in many Shwetambar communities.
• It is a reverential salutation to all sadhus and sadhvis (monks and nuns). It praises their virtues (guṇas) such as restraint, vigilance, and non-attachment (aparigraha).
• Its core purpose is to bow with humility before those who live dharma, to seek forgiveness (kṣamā) for faults, and to cultivate friendship (maitri) and respectful conduct (vinay).

Traditionally:

• Shwetambar: Both Laghu (short) and Badi (long) versions are used; Badi is the more expanded form of the vandana and forgiveness request during Pratikraman.
• Digambar: Some differences in the verses and order, but the aim remains the same—humility before munis/āryikās and reflection on their core virtues.

If you’d like, I can share the full text with line-by-line arth (translation) according to your tradition.

You can read more here