If you’re in a rush, you might not even need a physical pass:
Look for automated kiosks near major bus stops.
Whether you’re a local commuter or just visiting, getting your hands on a bus pass in Moscow is remarkably easy. The city’s unified transport system means one card rules them all—buses, trams, and the metro.
Suburban railway ticket offices also sell and top up Troika cards. Pass Options & Pricing
Use the Moscow Metro or Moscow Transport apps to top up your Troika card remotely. Note: If you top up online, you must "activate" the payment by touching your card to a yellow terminal inside any metro station.
Valid for all transport. You can buy these for a set number of trips (e.g., 1 or 2) or for time-based durations (1, 3, or 30 days).
Depending on how much you plan to travel, you have several choices: