assuming all of the gold revaluation gains get credited to the Treasury's general account to retire government debt (e.g. by re-purchasing US Treasury bonds from the market) - that would cover a mere β3% of outstanding US government debt
gold revaluation proceeds are not necessarily used to cover sovereign debt
central banks of Italy, Germany, Lebanon, South Africa & CuraΓ§ao and Sint Maarten reevaluated gold in the past, with some using the proceeds to finance the government, while others the central bank