Can landlord use the rent money towards the damages in VA state?

[Kali V.]

hi

My tenant vacated early (by middle of the month) but paid for full month rent, so i have 15 days of rent in my possession. There is a security deposit of 1month rent paid at beginning of the lease term

After move out inspection few days ago, we noticed several issues and damages that requires some work.  The fixing cost may exceed the security deposit money.

1. In Virginia state, would  the law allows landlord to retain the rent credit left towards fixing the damages ?

2. If landlord can not retain the rent amount left towards the damages, how soon the rent need to be credited back to the tenant ?