We have received a grant to cover our Business Rent/JRS. What should we enter it as on QB's?

Hello user36663

You can do this by creating a  bank deposit by going to the +  symbol >bank deposit>in the account field at the top left select the bank account it was received into and ensure the date is correct>in the add funds to this deposit select an income account>in payee you can use HMRC

You can set up a specific income account for furlough if you like by going to accounting>chart of accounts>new>in the account type select incme>in detail type you can use the refunds given>in the name change it to Furlough and then save and close

Then when you do the bank deposit mentioned above you can use that income account 

We just need to add we aren't accountants so we would always recommend you confirm with your accountant they're happy for you to record it this way.