
The Microsoft Secure score is a useful page to get an idea of the general improvement areas you should monitor and approach in your tenant.
When you make a change to reflect one of the improvement actions, you might have to wait up to 48 hours to get the points in the portal.
If you have waited the 48 hours (generally, it’s 24 hours, but the job might fail), check that the policies you created were configured as recommended in the “implementation” tab, then try the following.
First, check if there is some degradation with the service.
If there isn’t degradation, try changing the Conditional Access Policy (or the security policy you enabled) and see if the secure score catches up.
If it didn’t, or you are in a hurry, click on the recommended action, “Edit status & action plan”, and resolve the suggestion as risk accepted, then wait for the score to update. Once you see that the full points are awarded, revert the change. This procedure should “force” the sync to grant you full points, then change it with the actual value.

If the above failed, contact Microsoft Support and request a manual restart of the job.
Either that will solve it, or in some cases, just waiting a couple more days will fix it.