We quite often import solutions to the Dev, Test, UAT or Production environments in Dynamics CRM Online/ On-prem.
Sometimes, we do not know the progress or status of the solution import by looking at the below screenshot.

So, to check the Progress, follow the below steps.
Step 1: Open Dynamics CRM Advanced Find, where the solution is being imported.
Step 2: In Look for: Select Import Jobs entity and give the condition Created On = Today.

Step 3: Identify your SolutionName and check the Progress in percentage.

Hope you have learned, the way to check the solution import progress.