Lemon(citrus) fruit looks decayed

its sunburn i guess

its brown bloch -mite damage now we cant manage it next time spray below *spray wettable sulper 3gm or dicofol 2gm /lit water 3 times at sep ,oct ,nov .one spray should be on marble size fruit size

Hi pradeep, Venkat's diagnosis could be right, but the scars have some transitional symptoms of Citrus Scab, so I should also recommend to review at plantix library for comparison with your affected plants and get more information about this disease and control measures. Thank you for your interest in Plantix Community!

Thank you pradeep for your great efforts!