Question:
Can Shnayim Mikra (or part thereof) for upcoming Shabbos be read on Yom Tov that falls out during the week (as in Shavuos this year)?
Answer:
One can do Shnaim Mikra also on Yom Tov that falls out during the week.
Sources:
O:CH 284:3. Sha’arey Teshuvah 4,Mishnah Berurah 18