Hello
No need to remove bumper.
Look on the slam panel above the headlight. In two recesses are two prongs holding the headlight in. Yours will have hoops to pull them up with.
Pull both out, remove headlight, torx bit needed to remove back cover, change the bulb
Here is a useful link -
https://www.volvocars.com/mt/support...nt---headlamps
Just for note and no real issue, you've posted in section that's not for your car.
Don't forget to include exact year and model of car. It will get you better responses.
HTH
Cheers
Dave