Ensure you meet the entry visa requirements; you can check more details on www.saudiembassy.net/tourist-visa
All visitors arriving in the country with a valid tourism visa must provide evidence of a full course of one the four vaccines currently recognized: two doses of the Oxford/Astra Zeneca, Pfizer/BioNTech or Moderna vaccines or a single dose of the vaccine produced by Johnson and Johnson. Travelers arriving in Saudi Arabia are also required to provide a negative PCR test taken no more than 72 hours before departure and an approved paper vaccination certificate, certified by the official health authorities in the issuing country.