is a test done for Syphilis
If is positive that means, you have been infected with Syphilis in the past.
If you are asymptomatic, then yo must be in late latent phase.
These Injections with help cure the disease.
VDRL will be repeated after 6 months.
If sill positive, you will need to take further injections.
Usually it gets completely under control with medicines.
So be reassured.
Thanks and Regards