Adjectives which describe an extreme quality can be modified by absolutely, completely, really and totally but not normally with very. Some common examples are:
amazing, excellent, horrified, awful, exceptional, huge, brilliant, fantastic, perfect, delighted, furious, stunning, essential, horrible, terrible,
Her dress was absolutely stunning.
Not: Her dress was very stunning.
That singer is really awful.
Not: That singer is very awful.
It is a really fantastic film.
Not: It is a very fantastic film.
We also use so as an intensifier to mean ‘very, very’:
That motorway is so dangerous. Everyone drives too fast.
That’s kind of you. Thanks so much for thinking of us.
So, Can "so & very" modify "great"?
Is it ok to say "It's so great" & "It's very great"