Assuming both the sending and receiving accounts are verified, neither has no open disputes and/or claims and neither has any other issues - there's no limit on the total amount you can receive however, there is a cap on the transaction amount of $10,000 meaning if you were to get $20,000, the sender would have to make two transactions of $10,000 each. Keep in mind that all transfers are subject to review and could be delayed or stopped if PayPal identifies an issue.
Note, I did find there are limits on withdraws from your account balance to for example your bank account:
Minimum withdrawal amount: $1.00
Maximum withdrawal amount per transaction: $10,000.00
Maximum withdrawal amount per day: $20,000.00 or 150 withdrawal transactions
Maximum withdrawal amount per week: $50,000.00 or 250 withdrawal transactions
Maximum withdrawal amount per month: $100,000.00 or 750 withdrawal transaction
