XM's no deposit bonus, usually $30 and occasionally $50 in regional campaigns, is trading credit, not cash. It is for new clients only, one bonus account per person and per IP address, and it is credited within 24 hours after you verify your phone number in the Members Area. The credit itself can never be withdrawn.
Profits made with the credit are withdrawable, but the volume rule is unclear: regional and affiliate sources cite 50 micro lots, an older official PDF set 10 micro lots plus at least five round-turn trades, and the current global terms list no figure and say only that profits follow the standard withdrawal procedure. Any withdrawal from the account removes the bonus proportionally: withdraw 40% of your balance and 40% of the remaining credit disappears. Trades held under ten minutes may not count, and the terms ban expert advisors, automated trading, scalping, arbitrage, news trading and proxies on bonus accounts. Realistically, this is a way to test XM's execution with real money on the line, not free income; a $30 credit traded within the rules produces small numbers.