Google multiplies the reward by 0.8, 1 or 1.2 depending on report quality across seven dimensions, and only counts what you provided before triage; later additions usually do not change it. Write to a one-page template (title, summary, preconditions, steps, impact, fix suggestion), then estimate hourly expected value as probability x amount / hours. A bigger ceiling can still lose to a small payout once the odds are low enough. Only Resolved is guaranteed to pay; duplicates and invalid reports are common. Every probability and hour count in this post is an assumption, not a statistic.
RCE means an outsider can make someone else's machine run code. In Google's table, for a normal *.google.com app, RCE has a $75,000 base reward against $10,000 for XSS. The two beginner paths are user input glued into a shell command and deserializing untrusted data; the fixes are argument lists and JSON.
CVE-2021-28476 is a bug in Hyper-V's virtual network switch driver: a guest VM sends a crafted request, the host code follows an address inside it without checking, and the host crashes. Akamai claims two scenarios, a crash and code execution, but the public PoC only shows the crash; code execution was not publicly demonstrated. CVSS 9.9, patched May 2021. On the bounty table, what was publicly shown maps to the DoS cell (up to $15,000); the L1 guest-escape cell tops out at $250,000 and needs a working RCE exploit, but without an exploit that cell still has $200,000, $100,000 and $50,000 rows.