HSBC Credit card question pls?

This is my first time that I’m applying for credit card(HSBC credit card) and I don’t know some definitions.
the agreement says
APR 19.9% variable
Total charge for credit £152.00
Comprised of the following:
total interest charge £152.00
annual fee of £0.00

what is £152.00 for?
do I have to pay that now?
thanks for your answer

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