fogalmam sincs róla meaning in English

I don’t know the first thing about it+[UK: ˈaɪ dəʊnt nəʊ ðə ˈfɜːst ˈθɪŋ ə.ˈbaʊt ɪt] [US: ˈaɪ ˈdoʊnt ˈnoʊ ðə ˈfɝːst ˈθɪŋ ə.ˈbaʊt ˈɪt]

I haven’t the faintest idea+[UK: ˈaɪ ˈhæv.n̩t ðə ˈfeɪn.tɪst aɪ.ˈdɪə] [US: ˈaɪ ˈhæ.vn̩t ðə ˈfeɪn.təst aɪ.ˈdiːə]

I’ll be hanged if I know+[UK: aɪl bi hæŋd ɪf ˈaɪ nəʊ] [US: ˈaɪl bi ˈhæŋd ˈɪf ˈaɪ ˈnoʊ]

I really can’t think why+[UK: ˈaɪ ˈrɪə.li kɑːnt ˈθɪŋk waɪ] [US: ˈaɪ ˈrɪ.li ˈkænt ˈθɪŋk ˈwaɪ]

I can’t think why+[UK: ˈaɪ kɑːnt ˈθɪŋk waɪ] [US: ˈaɪ ˈkænt ˈθɪŋk ˈwaɪ]

I haven’t the faintest idea+[UK: ˈaɪ ˈhæv.n̩t ðə ˈfeɪn.tɪst aɪ.ˈdɪə] [US: ˈaɪ ˈhæ.vn̩t ðə ˈfeɪn.təst aɪ.ˈdiːə]