Selecting "Leverage" when creating a MetaTrader account is only applicable to the Forex and Metals (Max 1:500). The rest of the market has a fixed leverage as below: 

Cryptos: 1:100
Stocks: 1:20 
Indices: 1:200 
Energies: 1:200

Leverage for XAUUSD will be temporarily changed from 1:500 to 1:100 until further notice. 

This is due to the spread of Covid-19 virus causing many Gold refineries to close which creates a shortage of Gold in the markets.