In the .env file in the web root you will find the configuration below:

# Default rules
DEFAULT_POINTS_EXPIRATION_MONTHS=""
DEFAULT_POINTS_PER_CURRENCY=""
DEFAULT_POINT_VALUE=""
DEFAULT_MIN_POINTS_PER_PURCHASE=""
DEFAULT_MAX_POINTS_PER_PURCHASE=""
DEFAULT_MIN_POINTS_PER_REDEMPTION=""
DEFAULT_MAX_POINTS_PER_REDEMPTION=""

Update the values as you want.

These are the default values:

# Default rules
DEFAULT_POINTS_EXPIRATION_MONTHS=6
DEFAULT_POINTS_PER_CURRENCY=200
DEFAULT_POINT_VALUE=0.0001
DEFAULT_MIN_POINTS_PER_PURCHASE=100
DEFAULT_MAX_POINTS_PER_PURCHASE=1000000
DEFAULT_MIN_POINTS_PER_REDEMPTION=15000
DEFAULT_MAX_POINTS_PER_REDEMPTION=500000