India won this series 2-0 after the first match was washed out.
Here is the record of all T20Is between these sides:
Of the 18 completed matches:
India lead 13-5 overall
In India, they lead 8-2
In Sri Lanka, they lead 4-1
In neutral venues, India trail 1-2
From the above list, we see that the only bilateral series of 3 matches was in India in Dec 2017, which India won 3-0. Earlier in Sri Lanka that year, India won all the Tests and ODIs plus the sole T20I.
Now for individual records, starting with
Most runs (115 or more):
The Indian top 4 in white-ball cricket are the top 4 here.
RG Sharma is the only one with a century. Kohli has the most (4) scores of 50+.
Highest individual scores (50 and above):
This was a low-scoring series as the highest score was just 57 by DM de Silva.
Most wickets (6 or more):
YS Chahal and Ashwin lead here, along with K Yadav, Bumrah and others who played in this series.
Best innings bowling (3 wickets or more):
The top positions are of those who have not played for a while. The best in this series was SN Thakur’s 3-23.
Most dismissals (5 or more):
Dhoni expectedly leads, although HH Pandya is a bit of a surprise here. He also has the same dismissal rate as Dhoni.
Most innings dismissals (3 or more):
An one-man show.
All-round match performance (20 runs and 2 wickets):
Yuvraj Singh’s performance was clearly the best. Also note Thakur’s performance in this series.