When I first saw it written out, I pronounced it in my head as “bettle-gooz”. I didn’t even know the movie Beetlejuice was referencing the name of the star.
According to Wikipedia , there are six common pronunciations:
الجوزاء / Ibṭ al-Jauzā’
or
يد الجوزا / Yad al-Jauzā
or
Betelgeuse /ˈbɛtəldʒuːz/
or
Betelgeuse /ˈbiːtəldʒuːz/
or
Betelgeuse /ˈbɛtəldʒuːs/
or
Betelgeuse /ˈbiːtəldʒuːs/,