File a reinstatement request through Google's Business Profile help center. One request, with evidence attached: business license, utility bill or lease showing the address, storefront/vehicle photos, and your website matching the profile's name exactly. Reinstatements commonly take days to a few weeks.
Before filing, fix what likely caused it: keyword-stuffed business name, a virtual office or PO box presented as a storefront, service-area settings that contradict your address type, or recent bulk edits. Filing without fixing gets you a denial and a longer road.
Never create a second profile while suspended. Duplicate profiles are themselves a violation and can convert a recoverable suspension into a permanent one.