To find a specific package version:
In Unity, open the Package Manager window (navigate to Unity’s main menu and go to Window > Package Manager).
If you are looking for a preview package, select Show preview packages from the Advanced drop-down menu.
Select the package you want information for from the packages List view (on the left).
Expand the arrow to the left of the package in the list.
A new row appears, displaying the See all versions link.
Click the See all versions link.
A scrollable list appears with all available versions.
Click on another version to select it.
The package details appear in the pane on the right.
Notice the verified tag no longer appears in this example because version 1.2.4 of the TextMesh Pro package is not verified for the version of Unity used in this example.
You can perform a variety of actions when you select a specific version: