Is there any limit of usage for Applepay

Apple Pay is just a way of using a credit or debit card. Any limits would come from the card issuer.

There are limits on Apple Cash:

Apple Cash and person to person payments limits - Apple Support

Please review the Apple Support article on Apple Pay spending limits.

About limits when using Apple Pay in stores – Apple Support (AU)

There are additional limits and restrictions as outlined in the link below if it involves Apple Cash. Please review the link below.

https://applecash.greendot.com/termsconditions/

Apple Cash and person to person payments limits - Apple Support

Excellent resource on Apple Pay. My search didn't turn that up at all.

It always takes a community.