Wotcha and welcome.
Do you have the advert for the car as that is a reasonable starting point - The accuracy can be verified as you spend more time with your motor.
Next the receipts, ignore any servicing, separate out repairs and engine work. Has the car had a tune? If so look for engine parts, turbo, pistons air filter or air intake parts.
That should get you started.
It is worth getting it all listed in an excel spreadsheet as the same questions will be asked at renewal or when / if you move to another provider