I have seeing many green dots on my camera ?

Hello _raina786,

If the camera on your device is not working, here's some things you can check: If the camera or flash on your iPhone, iPad, or iPod touch isn't working

Also make sure you've covered the basics like restarting the device and making sure it's up to date.

Restart your iPhone

Update your iPhone or iPad

If the camera is still not working, you can find available service options for iPhone here: iPhone Repair & Service

Cheers!