Pronunciation: [wˌɒts ˈʌpɪŋ] (IPA)
Correct spelling for the English word "whats upping" is [wˌɒts ˈʌpɪŋ], [wˌɒts ˈʌpɪŋ], [w_ˌɒ_t_s ˈʌ_p_ɪ_ŋ] (IPA phonetic alphabet).