An x ray
of the concerned tooth will be good to know if RCT is required or not. Once it will be clear, then you have multiple options like composite, veneers
, laminates, crown. Cost varies place to place and type of treatment you choose. Cheapest treatment will cost you around 2 k to 3k with RCT and around 1k without RCT. At your place (delhi-NCR )the minimum cost would be higher for obvious reasons.