Yes—if you are eating during Paryushan, fruits are generally permitted.

How it is usually observed

• If you are fasting (upavās), you won’t eat anything; only boiled/filtered water at your fixed times.
• If you are on ekāsan/bēsān (one or two meals a day), fruits are fine at that meal.
• If you are on chauvihār, nothing is taken after sunset.
• If you are doing ayambil, fruits are normally avoided because ayambil is one-bland, simple, boiled food without milk, oil, ghee, sugar, or fresh/raw items.

Careful Jain way of taking fruits

• Take them only in daylight, within your declared meal times.
• Wash thoroughly; avoid overripe or infested fruit.
• Cut just before eating; do not store cut fruit.
• Avoid wastage and excessive variety; keep it simple and sattvic.
• Filter drinking water and avoid eating anything after sunset.

Tradition notes

• Shwetāmbars commonly take pachchakkhān to avoid green vegetables (shākh) during Paryushan; fruits are not “shākh,” so they are allowed unless your vow restricts them.
• Digambars during Das-Lakshan also permit fruits when eating, though many prefer only boiled/simple food to minimize himsā; follow your declared vows.

Essence Paryushan is about saiyam (self-restraint) and ahiṁsā. Choose the strictness you have vowed, and within that, simple, carefully handled fruits are acceptable.