Yes, you can play PUBG on the Vivo Y12 as it is an Android phone and it comes with the MediaTek Helio P22 processor and 4GB of RAM.
Check its gameplay-
Check Full Device Specifications Vivo Y12
Vivo Y12 currently does not support 5G as bands are not fixed in the Indian market but it should support 5G once the band is allocated in the Indian market. Vivo Y12 is an average mid-range phone having basic features to meet your daily requirements.
You can check the specs of Vivo Y12 here: Vivo Y12