Pakistan scored 203 for no loss against England in the 2nd T20I at Karachi on 22 Sep. Actually, the T20I record is 213/0 by Gibraltar v Bulgaria earlier this year, though Pakistan’s 203 is the best for matches between full members. The batsman were M Rizwan (88*) and Babar Azam (110*).
Here we see all instances of a winning chase of 100 or more runs for no loss in T20Is:

The best by India is 103/0 against Zimbabwe in 2016 (KL Rahul 47*, Mandeep Singh 52*).
Now we look at the corresponding figures for ODIs:
All instances of a winning chase of 150 or more runs for no loss in ODIs:

South Africa holds the record with 282/0 against Bangladesh in 2017 (de Kock 168*, Amla 110*).
India’s record is 201/0 against New Zealand in 2009 (Gambhir 63*, Sehwag 125*).
Finally, we look at 10-wicket victories in Tests with 75 or more in the 4th innings:

The record is 173/0 by Australia against England in 2017 (Bancroft 82*, Warner 87*).
The first 4 partnerships are all by Australia.
The best for India is 78/0 against Pakistan in 1980 (Gavaskar 29*, Chauhan 46*).