: Your balance is considered "prepaid credit" for digital content within the store (apps, games, movies, books). It is not treated as a liquid currency that can be transferred out or used to buy a different prepaid instrument.
: According to official Google Play Gift Card Terms, credits are not redeemable for cash or other cards.
: You cannot use your balance to top up Google Pay for real-world transactions or store-wide hardware purchases at the Google Store. YouTube Premium