This is the 956th most frequent German word.
schätzen
To estimate, value, or appreciate.
Used to express appreciation or value for something.
Ich schätze deinen Rat sehr.
I highly value your advice.
Used to express an estimation or assumption.
Ich schätze, dass er um fünf Uhr ankommt.
I estimate that he will arrive at five o'clock.
Less common usage, meaning to rely or depend on.