Even if Pakistan gets those Missiles, Aircraft Carriers are not that easy to take down. Even the Chinese plan to start fires and disable Aircraft carriers with their missiles,, not sink them entirely, which would need sustained bombing runs.
In 2005, the US Navy intentionally tested the decommissioned supercarrier USS America. It withstood nearly four weeks of explosive detonations around its hull, to finally sink it.
In 1946, US tested a nuclear detonation next to a Carrier Group. The first nuclear test, which was an Airburst, destroyed the escort ships. but did not do anything to the Aircraft Carrier other than contaminating it. A second (underwater) Nuclear Blast managed to sink the Carrier, that too, by flooding it, not by actual damage.
I don't know the quality of Vikranth in comparison to the US Carriers. But Missiles would disable it at best, or take out its capabilities. But Pakistan will need to bomb it relentlessly by air, to actually sink it. There are theories that air launched missiles can achieve better results by destroying the command centre and then causing deeper explosions internally, that is probably where the JF17 mounted DF21s can achieve better results, but nobody would know unless someone actually tries it.