וכמה שמביטים בה יותר
and as much as people are looking at her
רואים שאין מה לדבר
they see that there is nothing to say (=to disagree)
והיא הילדה הכי יפה, יפה בגן
and she is the prettiest girl in the (kinder) garden
According to the formal rules of the academy, the letters בגד כפת (=beged kefet) get דגש (=the little point in the middle ּבּגּדּ כּפּת) in the beginning of a syllable, but after ו החיבור (=and) not.
Thus the word כמה is pronounced "kama" and the word וכמה is "vechama".
The good news: most of the native speakers will probably say "vekama", so if you are trying to improve your Hebrew, postpone this rule to the end, after you know everything else..
Yehudit Ravitz did a very professional job in this song, and she pronounces the words perfectly!