The government have introduced a scheme for anyone self employed which allows you to claim a taxable grant of 80% of your average monthly profits up to £7,500. HMRC have been contacting those eligible for the scheme so you may already know if you will be entitled to this.
The online service will be available from 13th May 2020 so please ensure that you use HMRC's online tool to check if you are eligible if you think you may be. 
Use the link below to access this tool and for further guidance on the scheme. This relates to the fifth claim which covers the period of May 2021 up to September 2021.