Ranking every 2020 release I saw in 2020 in order from best to worst. 

Mank 

The Trial of the Chicago 7

(The Godfather Coda - This is a re-edit of 1990's The Godfather Part III)

Tenet 

The Dissident 

John Lewis: Good Trouble

Horse Girl

Borat 2 

The Christmas Chronicles 2 

Jasper Mall

Greyhound

Tied for worst: The New Mutants/Wonder Woman 1984