If I have urinary incontinence, should I perform ablution and clean myself for each prayer, or is it sufficient to do one ablution for both Dhuhr and Asr prayers?
It depends on your health condition. If your urine keeps dripping continuously with out few minutes of break, then you should perform one Wudhu and pray. If your urine dripping stops for few minutes which is enough for you to quickly perform Wudhu and Pray only the obligatory acts of Salah, then you must perform Wudhu and Salah within that minutes of purity.
Wassalam.
Wassalam.