To scale something can mean

Answer 1

Make achievement

Answer 2

To scale something is to climb it, too, in colloquial English. The dictionary defines it this way:

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scale1.

[skâl]

NOUN

1.each of the small, thin or bony plates protecting the skin of fish and reptiles, typically overlapping one another.

synonyms: plate · lamella · lamina · squama · scute · scutum

2.something resembling a fish scale in appearance or function, in particular.

3.a flaky deposit, in particular.

VERB

1.remove scale or scales from:
"he scales the fish and removes the innards"

2.
(scaling)

(especially of the skin) form scales:
"moisturizers can ease off drying and scaling"

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