It means "give it a try".

To try--particularly, to try something slightly risky, unfamiliar, or adventurous. Opposite: "Give it a miss." "I've never eaten chicken feet before, but if you say they taste good I'm willing to give it a go." "That roller-coaster really looks terrifying. Should we give it a go?" "You can if you like, but you'll have to go by yourself--I'm going to give that one a miss."

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Thanks a lot!