In a phone call from Downing Street in London with Afghan President Ashraf Ghani on Friday, Johnson also agreed on the importance of making progress in peace talks.
Britain is one of the countries hardest-hit by the Covid-19 pandemic, with more than 120,000 deaths.
Wealthy nations have snapped up hundreds of millions of doses of vaccines against the virus, while some countries in the developing world have little or none.
Johnson said that he can't offer any cast iron guarantees because while infections are falling, there are still more COVID-19 patients in hospitals than the peak of the pandemic in April 2020.
Prime Minister Narendra Modi is expected to attend the G7 Summit in Cornwall in June after India was invited as a guest country by the UK, alongside South Korea and Australia.
Since then, hospitals have treated more than 320,000 patients with COVID, with around one person with the virus admitted to critical care every 30 minutes.
Johnson is arguing that Scotland is benefiting from his Conservative government's approach to getting vaccine shots out quickly.
The UK is keen to conclude a post-Brexit free trade agreement with the US, but the new American administration has been less vocal over this amid the ongoing COVID-19 pandemic crisis.
According to Variety, the drama will trace the impact COVID-19 crisis on the country, and the response of scientists, nurses, and doctors as they worked round the clock to try and contain the virus.
It was already classified as a more highly-transmissible variant but its risk level was so far not believed to be any greater than the original strain.
The G7 is made up of the UK, Canada, France, Germany, Italy, Japan, the United States and the European Union.
All passengers will continue to be required to fill in locator forms, with the fines in place for a breach in any of the lockdown conditions starting at 200 pounds.
Johnson highlighted the efforts taken by the Tamil diaspora that range from building businesses to boost the country's economy.
Johnson's 11 km bicycle journey was defended by his spokesperson as being within the 'stay local' coronavirus lockdown rules of the country.
"We have a really tough fight on our hands It is a very perilous moment because everyone can sense the vaccine is coming in ; my worry is that will breed false complacency," said Johnson.