Reading up on it, that ship is a disaster. They had a tugboat follow it to Syria, because the propulsion system is so unreliable.
https://en.wikipedia.org/wiki/Russian_aircraft_carrier_Admiral_Kuznetsov
When it was operating near Syria, its arresting gear broke twice, which resulted in 2 jets going in the water, one in November 2016, one in December that year. The Russian Navy suspended operations on it after that. It went back to Russia for refit, in early 2017, so it's really been out of service for close to 6 years at this point.
During that time, a 70 ton crane fell on it, putting a 200 square foot hole in its deck. It has caught on fire at least twice (one of those times being yesterday), one of the fires caused 2 fatalities.
The Russians are saying they expect it to return to service in 2024. There is no doubt in my mind that date will slip. Assuming they do get it in service in 2024, that's 7 to 8 years out of service.
They're talking about adding 15 years to its time in service through this refit. Assuming they do get that, I'd imagine most of that time it will be in port, being worked on further.
I hope they keep pouring money into it.