映画の評価は可もなく不可もなくだった。
The movie's reviews were average.
普通 means 'ordinary' or 'normal' and is a general adjective/noun, whereas 可もなく不可もなく specifically expresses a balanced, mediocre judgment.
Standard kanji-kana mixed spelling.
Full kanji spelling; less common but still seen.
Mixed spelling variant.
Derived from the Chinese-style grading terms 可 (acceptable) and 不可 (unacceptable), combined with も...なく (neither...nor). The phrase literally means 'neither acceptable nor unacceptable'.