In the Power Rangers universe, there are two distinct comics that hold the "Issue #20" designation. Depending on which series you are looking for, the content and "good paper" (story/art quality) differ significantly: Mighty Morphin #20 (Released June 2022)
Rocky and Matt serve as Earth’s last line of defense against King Aradon and his Machine Army, while Billy finds help in the Lion Galaxy. [MundoTokusatsu] Mighty Morphin #20.cbr
This is a seminal issue that reveals a "secret history" of the Power Rangers. In the Power Rangers universe, there are two