What do you mean by 2020 edition and 2022 impression?

1 and the 2020 edition mean that the first edition of this book was published in 2020.

2. Impression number 2022 means that the impression number of this book is 2022.

3. Edition refers to the number of important changes in the content of the edition indicated on the copyright page of the book, which is different from the printing number. Print run refers to the number of times a book is printed per edition.