No. You can't make an offer without the report. The whole point of the report is to allow the parties to value your claim.
If you want to settle, you'll have to choose the amount you want to offer because your solicitor can't advise you as your medical evidence isn't complete. I wouldn't value your claim either. If you were my client, and you wanted to settle now, you'd have to tell me the amount you wanted and I'd send a mandate to you to sign to show you understand you could be under-settling, you're going against advice and you know that once it's settled it's done and dusted, no going back.
In the portal process you have to make the first offer, you don't invite offers, so you'll have to decide on an amount. The problem is that if you can't agree on an amount, you'll have to go to a Court hearing for a Judge to decide, on incomplete evidence. Which could mean you get way less than you wanted.
You really need to be patient and wait it out, in my opinion. You're doing yourself a disservice by rushing it.
What would you have done for money if you hadn't had the accident, if financial pressures mean you feel you have to settle?
Are they only typos in the report? Nothing substantive? I probably wouldn't get inconsequential typos fixed if they don't change the accuracy of the report.