There are several types of main resources in the game:

Coins.

Needed to increase the level and the rank of heroes.

How to get: from various chests, for participation in matches, for advancement in leagues.

Bucks.

Premium currency. Needed to buy offers and coins and maintain a winning streak.

How to get:  from special offers in the store, for increasing your account level, from some chests.

Nuts.

Needed for upgrading hero gears.

How to get:  from various chests, for completing tasks in the Contracts, for Personal orders, from the Trophy Road.

Batteries.

Needed to upgrade the heroes' abilities.

How to get:  from various chests, for completing tasks in Contracts, for Personal orders, from the Trophy Road, for advancement in leagues.

League badges.

The more league badges you collect, the higher you are on the Championship leaderboard and the higher your chances of moving to the next league.

How to get:  for participation in matches.

Crypto chips.

The Contract currency. Needed to purchase offers on the Black Market.

How to get:  for completing tasks in the Contracts.

Stars.

Fill the Star Pass progress bar.

How to get:  for participation in matches and special offers in the store.

Cubes.

Needed to increase the level of drones.

How to get:  from special offers in the store.

Plugins.

Needed to increase the level of the drone module.

How to get:  from special offers in the store.

Drone blueprints.

Needed to unlock drones. Each drone has its own type of  blueprint.

How to get:  from special offers in the store.