Open Paytm App and swipe to left to get 'All services' option:-
Dropdown a little bit to get 'City Transit' section then Tap on 'Transit Card' icon.
OR - You can just simply type 'transit' in search section and then tap on transit card option showing under City Transit section:-
Manage transit card section:-
1. Available transit card balance to be use for transit in metro/bus
2. Available balance that you recharged (block wallet). need to TOP up at AVM/counter operators to update the balance.
3. Your Paytm wallet balance
4. Transaction details (For transit)
5. Recharge/Add money details